Finding the Fourth Proportional to 416,115.38, 574,827.09 and 331,123.70
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Solution
The fourth proportional to 416,115.38, 574,827.09 and 331,123.70 is: 457,418.50
Step by Step Solution
- Step 1: Write the proportion equation
416,115.38 : 574,827.09 = 331,123.70 : x - Step 2: Convert to fraction form
416,115.38/574,827.09 = 331,123.70/x - Step 3: Cross multiply
416,115.38x = 574,827.09 × 331,123.70 - Step 4: Simplify right side
416,115.38x = 190,338,872,901.03 - Step 5: Solve for x
x = 190,338,872,901.03/416,115.38 - Step 6: Final answer
x = 457,418.50
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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.