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Finding the Fourth Proportional to 664,297.80, 996,446.70 and 398,358.60

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Solution

The fourth proportional to 664,297.80, 996,446.70 and 398,358.60 is: 597,537.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,297.80 : 996,446.70 = 398,358.60 : x
  2. Step 2: Convert to fraction form
    664,297.80/996,446.70 = 398,358.60/x
  3. Step 3: Cross multiply
    664,297.80x = 996,446.70 × 398,358.60
  4. Step 4: Simplify right side
    664,297.80x = 396,943,112,386.62
  5. Step 5: Solve for x
    x = 396,943,112,386.62/664,297.80
  6. Step 6: Final answer
    x = 597,537.90

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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.