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Finding the Fourth Proportional to 426,454.92, 639,685.35 and 292,930.47

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Solution

The fourth proportional to 426,454.92, 639,685.35 and 292,930.47 is: 439,397.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,454.92 : 639,685.35 = 292,930.47 : x
  2. Step 2: Convert to fraction form
    426,454.92/639,685.35 = 292,930.47/x
  3. Step 3: Cross multiply
    426,454.92x = 639,685.35 × 292,930.47
  4. Step 4: Simplify right side
    426,454.92x = 187,383,330,227.61
  5. Step 5: Solve for x
    x = 187,383,330,227.61/426,454.92
  6. Step 6: Final answer
    x = 439,397.75

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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.