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Finding the Fourth Proportional to 488,063.10, 730,821.39 and 392,772.78

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Solution

The fourth proportional to 488,063.10, 730,821.39 and 392,772.78 is: 588,134.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,063.10 : 730,821.39 = 392,772.78 : x
  2. Step 2: Convert to fraction form
    488,063.10/730,821.39 = 392,772.78/x
  3. Step 3: Cross multiply
    488,063.10x = 730,821.39 × 392,772.78
  4. Step 4: Simplify right side
    488,063.10x = 287,046,747,560.87
  5. Step 5: Solve for x
    x = 287,046,747,560.87/488,063.10
  6. Step 6: Final answer
    x = 588,134.50

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1.5x scale

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.