Home / 498,498.28-687,924.12-272,143.78

Finding the Fourth Proportional to 498,498.28, 687,924.12 and 272,143.78

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Solution

The fourth proportional to 498,498.28, 687,924.12 and 272,143.78 is: 375,556.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,498.28 : 687,924.12 = 272,143.78 : x
  2. Step 2: Convert to fraction form
    498,498.28/687,924.12 = 272,143.78/x
  3. Step 3: Cross multiply
    498,498.28x = 687,924.12 × 272,143.78
  4. Step 4: Simplify right side
    498,498.28x = 187,214,270,369.97
  5. Step 5: Solve for x
    x = 187,214,270,369.97/498,498.28
  6. Step 6: Final answer
    x = 375,556.50

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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.