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Finding the Fourth Proportional to 552,704.20, 829,056.30 and 487,385.80

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Solution

The fourth proportional to 552,704.20, 829,056.30 and 487,385.80 is: 731,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,704.20 : 829,056.30 = 487,385.80 : x
  2. Step 2: Convert to fraction form
    552,704.20/829,056.30 = 487,385.80/x
  3. Step 3: Cross multiply
    552,704.20x = 829,056.30 × 487,385.80
  4. Step 4: Simplify right side
    552,704.20x = 404,070,268,020.54
  5. Step 5: Solve for x
    x = 404,070,268,020.54/552,704.20
  6. Step 6: Final answer
    x = 731,078.70

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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.