Home / 481,190.20-721,785.30-402,458.20

Finding the Fourth Proportional to 481,190.20, 721,785.30 and 402,458.20

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Solution

The fourth proportional to 481,190.20, 721,785.30 and 402,458.20 is: 603,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,190.20 : 721,785.30 = 402,458.20 : x
  2. Step 2: Convert to fraction form
    481,190.20/721,785.30 = 402,458.20/x
  3. Step 3: Cross multiply
    481,190.20x = 721,785.30 × 402,458.20
  4. Step 4: Simplify right side
    481,190.20x = 290,488,412,624.46
  5. Step 5: Solve for x
    x = 290,488,412,624.46/481,190.20
  6. Step 6: Final answer
    x = 603,687.30

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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.