Finding the Fourth Proportional to 687,478.38, 948,705.87 and 381,536.97
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Solution
The fourth proportional to 687,478.38, 948,705.87 and 381,536.97 is: 526,513.09
Step by Step Solution
- Step 1: Write the proportion equation
687,478.38 : 948,705.87 = 381,536.97 : x - Step 2: Convert to fraction form
687,478.38/948,705.87 = 381,536.97/x - Step 3: Cross multiply
687,478.38x = 948,705.87 × 381,536.97 - Step 4: Simplify right side
687,478.38x = 361,966,363,061.01 - Step 5: Solve for x
x = 361,966,363,061.01/687,478.38 - Step 6: Final answer
x = 526,513.09
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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.