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Finding the Fourth Proportional to 498,317.78, 687,439.41 and 326,159.97

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Solution

The fourth proportional to 498,317.78, 687,439.41 and 326,159.97 is: 449,944.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,317.78 : 687,439.41 = 326,159.97 : x
  2. Step 2: Convert to fraction form
    498,317.78/687,439.41 = 326,159.97/x
  3. Step 3: Cross multiply
    498,317.78x = 687,439.41 × 326,159.97
  4. Step 4: Simplify right side
    498,317.78x = 224,215,217,342.42
  5. Step 5: Solve for x
    x = 224,215,217,342.42/498,317.78
  6. Step 6: Final answer
    x = 449,944.25

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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.