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Finding the Fourth Proportional to 664,481.80, 996,722.70 and 379,880.20

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Solution

The fourth proportional to 664,481.80, 996,722.70 and 379,880.20 is: 569,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,481.80 : 996,722.70 = 379,880.20 : x
  2. Step 2: Convert to fraction form
    664,481.80/996,722.70 = 379,880.20/x
  3. Step 3: Cross multiply
    664,481.80x = 996,722.70 × 379,880.20
  4. Step 4: Simplify right side
    664,481.80x = 378,635,218,620.54
  5. Step 5: Solve for x
    x = 378,635,218,620.54/664,481.80
  6. Step 6: Final answer
    x = 569,820.30

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Double scale
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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.