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Finding the Fourth Proportional to 768,273.80, 1,060,318.15 and 428,812.52

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Solution

The fourth proportional to 768,273.80, 1,060,318.15 and 428,812.52 is: 591,817.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,273.80 : 1,060,318.15 = 428,812.52 : x
  2. Step 2: Convert to fraction form
    768,273.80/1,060,318.15 = 428,812.52/x
  3. Step 3: Cross multiply
    768,273.80x = 1,060,318.15 × 428,812.52
  4. Step 4: Simplify right side
    768,273.80x = 454,677,691,529.62
  5. Step 5: Solve for x
    x = 454,677,691,529.62/768,273.80
  6. Step 6: Final answer
    x = 591,817.26

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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.