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Finding the Fourth Proportional to 424,523.92, 585,789.64 and 287,001.90

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Solution

The fourth proportional to 424,523.92, 585,789.64 and 287,001.90 is: 396,026.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,523.92 : 585,789.64 = 287,001.90 : x
  2. Step 2: Convert to fraction form
    424,523.92/585,789.64 = 287,001.90/x
  3. Step 3: Cross multiply
    424,523.92x = 585,789.64 × 287,001.90
  4. Step 4: Simplify right side
    424,523.92x = 168,122,739,680.32
  5. Step 5: Solve for x
    x = 168,122,739,680.32/424,523.92
  6. Step 6: Final answer
    x = 396,026.54

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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.