Finding the Fourth Proportional to 667,351.13, 920,939.97 and 361,420.49
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Solution
The fourth proportional to 667,351.13, 920,939.97 and 361,420.49 is: 498,757.79
Step by Step Solution
- Step 1: Write the proportion equation
667,351.13 : 920,939.97 = 361,420.49 : x - Step 2: Convert to fraction form
667,351.13/920,939.97 = 361,420.49/x - Step 3: Cross multiply
667,351.13x = 920,939.97 × 361,420.49 - Step 4: Simplify right side
667,351.13x = 332,846,575,217.99 - Step 5: Solve for x
x = 332,846,575,217.99/667,351.13 - Step 6: Final answer
x = 498,757.79
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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.