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Finding the Fourth Proportional to 667,908.10, 1,001,862.15 and 455,331.70

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Solution

The fourth proportional to 667,908.10, 1,001,862.15 and 455,331.70 is: 682,997.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,908.10 : 1,001,862.15 = 455,331.70 : x
  2. Step 2: Convert to fraction form
    667,908.10/1,001,862.15 = 455,331.70/x
  3. Step 3: Cross multiply
    667,908.10x = 1,001,862.15 × 455,331.70
  4. Step 4: Simplify right side
    667,908.10x = 456,179,595,925.16
  5. Step 5: Solve for x
    x = 456,179,595,925.16/667,908.10
  6. Step 6: Final answer
    x = 682,997.55

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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.