Home / 656,902.20-985,742.10-432,910.20

Finding the Fourth Proportional to 656,902.20, 985,742.10 and 432,910.20

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Solution

The fourth proportional to 656,902.20, 985,742.10 and 432,910.20 is: 649,621.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,902.20 : 985,742.10 = 432,910.20 : x
  2. Step 2: Convert to fraction form
    656,902.20/985,742.10 = 432,910.20/x
  3. Step 3: Cross multiply
    656,902.20x = 985,742.10 × 432,910.20
  4. Step 4: Simplify right side
    656,902.20x = 426,737,809,659.42
  5. Step 5: Solve for x
    x = 426,737,809,659.42/656,902.20
  6. Step 6: Final answer
    x = 649,621.53

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Half scale
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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.