Home / 782,451.29-1,174,112.92-422,614.87

Finding the Fourth Proportional to 782,451.29, 1,174,112.92 and 422,614.87

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Solution

The fourth proportional to 782,451.29, 1,174,112.92 and 422,614.87 is: 634,157.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,451.29 : 1,174,112.92 = 422,614.87 : x
  2. Step 2: Convert to fraction form
    782,451.29/1,174,112.92 = 422,614.87/x
  3. Step 3: Cross multiply
    782,451.29x = 1,174,112.92 × 422,614.87
  4. Step 4: Simplify right side
    782,451.29x = 496,197,576,644.11
  5. Step 5: Solve for x
    x = 496,197,576,644.11/782,451.29
  6. Step 6: Final answer
    x = 634,157.78

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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.