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Finding the Fourth Proportional to 498,452.38, 687,772.26 and 283,579.90

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Solution

The fourth proportional to 498,452.38, 687,772.26 and 283,579.90 is: 391,287.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,452.38 : 687,772.26 = 283,579.90 : x
  2. Step 2: Convert to fraction form
    498,452.38/687,772.26 = 283,579.90/x
  3. Step 3: Cross multiply
    498,452.38x = 687,772.26 × 283,579.90
  4. Step 4: Simplify right side
    498,452.38x = 195,038,388,713.57
  5. Step 5: Solve for x
    x = 195,038,388,713.57/498,452.38
  6. Step 6: Final answer
    x = 391,287.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.