Finding the Fourth Proportional to 918,926.28, 1,378,475.86 and 270,502.90
Calculator
Solution
The fourth proportional to 918,926.28, 1,378,475.86 and 270,502.90 is: 405,779.80
Step by Step Solution
- Step 1: Write the proportion equation
918,926.28 : 1,378,475.86 = 270,502.90 : x - Step 2: Convert to fraction form
918,926.28/1,378,475.86 = 270,502.90/x - Step 3: Cross multiply
918,926.28x = 1,378,475.86 × 270,502.90 - Step 4: Simplify right side
918,926.28x = 372,881,717,709.99 - Step 5: Solve for x
x = 372,881,717,709.99/918,926.28 - Step 6: Final answer
x = 405,779.80
Related Problems
Find fourth proportional to 459,463.14, 689,237.93 and 135,251.45
Half scale
Find fourth proportional to 1,837,852.56, 2,756,951.72 and 541,005.80
Double scale
Find fourth proportional to 918,927.28, 1,378,477.36 and 270,503.90
Similar ratio
Find fourth proportional to 1,378,389.42, 2,067,713.79 and 405,754.35
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.