Home / 662,142.20-993,213.30-396,721.40

Finding the Fourth Proportional to 662,142.20, 993,213.30 and 396,721.40

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Solution

The fourth proportional to 662,142.20, 993,213.30 and 396,721.40 is: 595,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,142.20 : 993,213.30 = 396,721.40 : x
  2. Step 2: Convert to fraction form
    662,142.20/993,213.30 = 396,721.40/x
  3. Step 3: Cross multiply
    662,142.20x = 993,213.30 × 396,721.40
  4. Step 4: Simplify right side
    662,142.20x = 394,028,970,874.62
  5. Step 5: Solve for x
    x = 394,028,970,874.62/662,142.20
  6. Step 6: Final answer
    x = 595,082.10

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Double scale
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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.