Math & Statistics
Progressions Calculator
Find the nth term and sum of arithmetic, geometric or harmonic progressions.
Your inputs
Change any value to update the result instantly.
Term 10
29
Sum of first n terms
155
Formula and working
Arithmetic: aₙ=a₁+(n−1)d · Geometric: aₙ=a₁rⁿ⁻¹ · Harmonic: reciprocal of arithmetic
- 1
Substitute your values
Progression type = 0; First term = 2; Common difference / ratio = 3; Term number n = 10
- 2
Apply the formula
Arithmetic: aₙ=a₁+(n−1)d · Geometric: aₙ=a₁rⁿ⁻¹ · Harmonic: reciprocal of arithmetic = 29
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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