Finding the Fourth Proportional to 487,720.80, 730,414.80 and 394,408.80
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Solution
The fourth proportional to 487,720.80, 730,414.80 and 394,408.80 is: 590,669.96
Step by Step Solution
- Step 1: Write the proportion equation
487,720.80 : 730,414.80 = 394,408.80 : x - Step 2: Convert to fraction form
487,720.80/730,414.80 = 394,408.80/x - Step 3: Cross multiply
487,720.80x = 730,414.80 × 394,408.80 - Step 4: Simplify right side
487,720.80x = 288,082,024,770.24 - Step 5: Solve for x
x = 288,082,024,770.24/487,720.80 - Step 6: Final answer
x = 590,669.96
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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.