Finding the Fourth Proportional to 687,302.49, 948,431.87 and 381,359.48
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Solution
The fourth proportional to 687,302.49, 948,431.87 and 381,359.48 is: 526,250.79
Step by Step Solution
- Step 1: Write the proportion equation
687,302.49 : 948,431.87 = 381,359.48 : x - Step 2: Convert to fraction form
687,302.49/948,431.87 = 381,359.48/x - Step 3: Cross multiply
687,302.49x = 948,431.87 × 381,359.48 - Step 4: Simplify right side
687,302.49x = 361,693,478,109.67 - Step 5: Solve for x
x = 361,693,478,109.67/687,302.49 - Step 6: Final answer
x = 526,250.79
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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.