# Proof Without Words: $1/4 + (1/4)^2 + (1/4)^3 + \ldots = 1/3$

by Rick Mabry (Louisiana State University in Shreveport)

Mathematics Magazine
February, 1999

Subject classification(s): Geometric Sequence
Applicable Course(s): 3.2 Mainstream Calculus II | 3.7 Discrete Math | 4.1 Introduction to Proofs

Visual proof of a geometric series identity

A pdf copy of the article can be viewed by clicking below. Since the copy is a faithful reproduction of the actual journal pages, the article may not begin at the top of the first page.