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Finding the Fourth Proportional to 458,260.30, 687,390.45 and 451,261.90

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Solution

The fourth proportional to 458,260.30, 687,390.45 and 451,261.90 is: 676,892.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,260.30 : 687,390.45 = 451,261.90 : x
  2. Step 2: Convert to fraction form
    458,260.30/687,390.45 = 451,261.90/x
  3. Step 3: Cross multiply
    458,260.30x = 687,390.45 × 451,261.90
  4. Step 4: Simplify right side
    458,260.30x = 310,193,120,508.86
  5. Step 5: Solve for x
    x = 310,193,120,508.86/458,260.30
  6. Step 6: Final answer
    x = 676,892.85

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Similar ratio
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1.5x scale

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.