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Finding the Fourth Proportional to 813,704.14, 1,122,978.26 and 451,241.69

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Solution

The fourth proportional to 813,704.14, 1,122,978.26 and 451,241.69 is: 622,750.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,704.14 : 1,122,978.26 = 451,241.69 : x
  2. Step 2: Convert to fraction form
    813,704.14/1,122,978.26 = 451,241.69/x
  3. Step 3: Cross multiply
    813,704.14x = 1,122,978.26 × 451,241.69
  4. Step 4: Simplify right side
    813,704.14x = 506,734,608,426.90
  5. Step 5: Solve for x
    x = 506,734,608,426.90/813,704.14
  6. Step 6: Final answer
    x = 622,750.44

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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.