Home / 766,134.38-1,057,255.50-421,963.76

Finding the Fourth Proportional to 766,134.38, 1,057,255.50 and 421,963.76

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Solution

The fourth proportional to 766,134.38, 1,057,255.50 and 421,963.76 is: 582,304.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,134.38 : 1,057,255.50 = 421,963.76 : x
  2. Step 2: Convert to fraction form
    766,134.38/1,057,255.50 = 421,963.76/x
  3. Step 3: Cross multiply
    766,134.38x = 1,057,255.50 × 421,963.76
  4. Step 4: Simplify right side
    766,134.38x = 446,123,506,060.68
  5. Step 5: Solve for x
    x = 446,123,506,060.68/766,134.38
  6. Step 6: Final answer
    x = 582,304.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.