Formula
a_n = a_1 × r^(n-1)
In a geometric sequence, each term is multiplied by the same ratio r.
Example
For 3, 6, 12, 24, ..., the 5th term is 3 × 2^4 = 48.
FAQs
What is the common ratio?
It is the constant factor that multiplies each term to get the next one.
Can the ratio be fractional?
Yes. Geometric sequences can grow, shrink, or alternate in sign depending on the ratio.