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Finding the Fourth Proportional to 647,074.70, 970,612.05 and 458,117.90

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Solution

The fourth proportional to 647,074.70, 970,612.05 and 458,117.90 is: 687,176.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,074.70 : 970,612.05 = 458,117.90 : x
  2. Step 2: Convert to fraction form
    647,074.70/970,612.05 = 458,117.90/x
  3. Step 3: Cross multiply
    647,074.70x = 970,612.05 × 458,117.90
  4. Step 4: Simplify right side
    647,074.70x = 444,654,754,060.70
  5. Step 5: Solve for x
    x = 444,654,754,060.70/647,074.70
  6. Step 6: Final answer
    x = 687,176.85

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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.