Finding the Fourth Proportional to 908,639.24, 1,253,892.74 and 521,518.38
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Solution
The fourth proportional to 908,639.24, 1,253,892.74 and 521,518.38 is: 719,678.48
Step by Step Solution
- Step 1: Write the proportion equation
908,639.24 : 1,253,892.74 = 521,518.38 : x - Step 2: Convert to fraction form
908,639.24/1,253,892.74 = 521,518.38/x - Step 3: Cross multiply
908,639.24x = 1,253,892.74 × 521,518.38 - Step 4: Simplify right side
908,639.24x = 653,928,110,458.56 - Step 5: Solve for x
x = 653,928,110,458.56/908,639.24 - Step 6: Final answer
x = 719,678.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.