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Finding the Fourth Proportional to 487,540.70, 729,998.85 and 487,540.70

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Solution

The fourth proportional to 487,540.70, 729,998.85 and 487,540.70 is: 729,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,540.70 : 729,998.85 = 487,540.70 : x
  2. Step 2: Convert to fraction form
    487,540.70/729,998.85 = 487,540.70/x
  3. Step 3: Cross multiply
    487,540.70x = 729,998.85 × 487,540.70
  4. Step 4: Simplify right side
    487,540.70x = 355,904,150,328.20
  5. Step 5: Solve for x
    x = 355,904,150,328.20/487,540.70
  6. Step 6: Final answer
    x = 729,998.85

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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.