Finding the Fourth Proportional to 425,572.49, 638,452.11 and 126,076.49
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Solution
The fourth proportional to 425,572.49, 638,452.11 and 126,076.49 is: 189,142.40
Step by Step Solution
- Step 1: Write the proportion equation
425,572.49 : 638,452.11 = 126,076.49 : x - Step 2: Convert to fraction form
425,572.49/638,452.11 = 126,076.49/x - Step 3: Cross multiply
425,572.49x = 638,452.11 × 126,076.49 - Step 4: Simplify right side
425,572.49x = 80,493,801,061.89 - Step 5: Solve for x
x = 80,493,801,061.89/425,572.49 - Step 6: Final answer
x = 189,142.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.