Home / 442,858,799.70-664,288,199.55-320,414,793.30

Finding the Fourth Proportional to 442,858,799.70, 664,288,199.55 and 320,414,793.30

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Solution

The fourth proportional to 442,858,799.70, 664,288,199.55 and 320,414,793.30 is: 480,622,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,858,799.70 : 664,288,199.55 = 320,414,793.30 : x
  2. Step 2: Convert to fraction form
    442,858,799.70/664,288,199.55 = 320,414,793.30/x
  3. Step 3: Cross multiply
    442,858,799.70x = 664,288,199.55 × 320,414,793.30
  4. Step 4: Simplify right side
    442,858,799.70x = 212,847,766,150,442,400
  5. Step 5: Solve for x
    x = 212,847,766,150,442,400/442,858,799.70
  6. Step 6: Final answer
    x = 480,622,189.95

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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.