If there is a "balloon payment" (final balance), enter it into B4 as a positive value, and use the formula =PMT(B2, B3, -B1, B4). Those formulas also assume that payments are at the end of the period (i.e. end of month). That is typical. However, for car leases and such, the payment is at the beginning of the period.
In some cases, you may be able to negotiate with your finance provider to spread the balloon payment over monthly instalments – this is essentially what refinancing is. Doing this can help make the payment more manageable and reduce the financial strain of a large lump sum payment.
Balloon mortgages are short-term loans that begin with a series of fixed payments and end with a final, lump-sum payment. That one-time payment is called a balloon payment because it's often at least twice as much as the previous ones, leaving many borrowers with a final bill for tens of thousands of dollars (or more).
Firstly, measure the dimensions of the balloon, such as its radius or diameter. The volume of a balloon can be approximated as that of a sphere, so you can use the formula for the volume of a sphere to calculate it. The formula is V = (4/3)πr³, where V represents the volume and r denotes the radius.