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Finding the Fourth Proportional to 486,531.20, 730,671.60 and 353,561.60

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Solution

The fourth proportional to 486,531.20, 730,671.60 and 353,561.60 is: 530,978.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,531.20 : 730,671.60 = 353,561.60 : x
  2. Step 2: Convert to fraction form
    486,531.20/730,671.60 = 353,561.60/x
  3. Step 3: Cross multiply
    486,531.20x = 730,671.60 × 353,561.60
  4. Step 4: Simplify right side
    486,531.20x = 258,337,419,970.56
  5. Step 5: Solve for x
    x = 258,337,419,970.56/486,531.20
  6. Step 6: Final answer
    x = 530,978.12

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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.