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Finding the Fourth Proportional to 624,558.38, 861,889.86 and 338,078.39

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Solution

The fourth proportional to 624,558.38, 861,889.86 and 338,078.39 is: 466,547.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,558.38 : 861,889.86 = 338,078.39 : x
  2. Step 2: Convert to fraction form
    624,558.38/861,889.86 = 338,078.39/x
  3. Step 3: Cross multiply
    624,558.38x = 861,889.86 × 338,078.39
  4. Step 4: Simplify right side
    624,558.38x = 291,386,336,226.13
  5. Step 5: Solve for x
    x = 291,386,336,226.13/624,558.38
  6. Step 6: Final answer
    x = 466,547.80

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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.