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Finding the Fourth Proportional to 424,555.73, 636,833.48 and 291,031.18

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Solution

The fourth proportional to 424,555.73, 636,833.48 and 291,031.18 is: 436,546.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,555.73 : 636,833.48 = 291,031.18 : x
  2. Step 2: Convert to fraction form
    424,555.73/636,833.48 = 291,031.18/x
  3. Step 3: Cross multiply
    424,555.73x = 636,833.48 × 291,031.18
  4. Step 4: Simplify right side
    424,555.73x = 185,338,394,508.58
  5. Step 5: Solve for x
    x = 185,338,394,508.58/424,555.73
  6. Step 6: Final answer
    x = 436,546.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.