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Finding the Fourth Proportional to 453,324.70, 679,987.05 and 408,223.90

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Solution

The fourth proportional to 453,324.70, 679,987.05 and 408,223.90 is: 612,335.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,324.70 : 679,987.05 = 408,223.90 : x
  2. Step 2: Convert to fraction form
    453,324.70/679,987.05 = 408,223.90/x
  3. Step 3: Cross multiply
    453,324.70x = 679,987.05 × 408,223.90
  4. Step 4: Simplify right side
    453,324.70x = 277,586,965,500.50
  5. Step 5: Solve for x
    x = 277,586,965,500.50/453,324.70
  6. Step 6: Final answer
    x = 612,335.85

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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.