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Finding the Fourth Proportional to 449,854.20, 674,781.30 and 442,078.20

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Solution

The fourth proportional to 449,854.20, 674,781.30 and 442,078.20 is: 663,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,854.20 : 674,781.30 = 442,078.20 : x
  2. Step 2: Convert to fraction form
    449,854.20/674,781.30 = 442,078.20/x
  3. Step 3: Cross multiply
    449,854.20x = 674,781.30 × 442,078.20
  4. Step 4: Simplify right side
    449,854.20x = 298,306,102,497.66
  5. Step 5: Solve for x
    x = 298,306,102,497.66/449,854.20
  6. Step 6: Final answer
    x = 663,117.30

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Similar ratio
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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.