Home / 442,858,724.20-664,288,086.30-320,414,717.80

Finding the Fourth Proportional to 442,858,724.20, 664,288,086.30 and 320,414,717.80

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Solution

The fourth proportional to 442,858,724.20, 664,288,086.30 and 320,414,717.80 is: 480,622,076.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,858,724.20 : 664,288,086.30 = 320,414,717.80 : x
  2. Step 2: Convert to fraction form
    442,858,724.20/664,288,086.30 = 320,414,717.80/x
  3. Step 3: Cross multiply
    442,858,724.20x = 664,288,086.30 × 320,414,717.80
  4. Step 4: Simplify right side
    442,858,724.20x = 212,847,679,709,716,544
  5. Step 5: Solve for x
    x = 212,847,679,709,716,544/442,858,724.20
  6. Step 6: Final answer
    x = 480,622,076.70

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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.