Home / 442,858,672.20-664,288,008.30-320,414,665.80

Finding the Fourth Proportional to 442,858,672.20, 664,288,008.30 and 320,414,665.80

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Solution

The fourth proportional to 442,858,672.20, 664,288,008.30 and 320,414,665.80 is: 480,621,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,858,672.20 : 664,288,008.30 = 320,414,665.80 : x
  2. Step 2: Convert to fraction form
    442,858,672.20/664,288,008.30 = 320,414,665.80/x
  3. Step 3: Cross multiply
    442,858,672.20x = 664,288,008.30 × 320,414,665.80
  4. Step 4: Simplify right side
    442,858,672.20x = 212,847,620,174,392,128
  5. Step 5: Solve for x
    x = 212,847,620,174,392,128/442,858,672.20
  6. Step 6: Final answer
    x = 480,621,998.70

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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.