Finding the Fourth Proportional to 687,388.90, 948,553.68 and 415,295.96
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Solution
The fourth proportional to 687,388.90, 948,553.68 and 415,295.96 is: 573,082.44
Step by Step Solution
- Step 1: Write the proportion equation
687,388.90 : 948,553.68 = 415,295.96 : x - Step 2: Convert to fraction form
687,388.90/948,553.68 = 415,295.96/x - Step 3: Cross multiply
687,388.90x = 948,553.68 × 415,295.96 - Step 4: Simplify right side
687,388.90x = 393,930,511,147.13 - Step 5: Solve for x
x = 393,930,511,147.13/687,388.90 - Step 6: Final answer
x = 573,082.44
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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.