# Geometric Progression

A geometric progression, also known as a geometric sequence, is a sequence of non-zero numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.

## Calculator of Geometric Progression

## Formula of Geometric Progression

a_n = a_1 \cdot r^{(n-1)}

- a - first term in the series,
- n - last term in the series,
- r - common difference.