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Finding the Fourth Proportional to 768,134.97, 1,060,027.43 and 428,604.03

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Solution

The fourth proportional to 768,134.97, 1,060,027.43 and 428,604.03 is: 591,474.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,134.97 : 1,060,027.43 = 428,604.03 : x
  2. Step 2: Convert to fraction form
    768,134.97/1,060,027.43 = 428,604.03/x
  3. Step 3: Cross multiply
    768,134.97x = 1,060,027.43 × 428,604.03
  4. Step 4: Simplify right side
    768,134.97x = 454,332,026,265.52
  5. Step 5: Solve for x
    x = 454,332,026,265.52/768,134.97
  6. Step 6: Final answer
    x = 591,474.21

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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.