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Finding the Third Proportional to 419,428.50 and 667,146.75

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Solution

The third proportional to 419,428.50 and 667,146.75 is: 1,061,169.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,428.50 : 667,146.75 = 667,146.75 : x
  2. Step 2: Convert to fraction form
    419,428.50/667,146.75 = 667,146.75/x
  3. Step 3: Cross multiply
    419,428.50x = 667,146.75 × 667,146.75
  4. Step 4: Simplify right side
    419,428.50x = 445,084,786,035.56
  5. Step 5: Solve for x
    x = 445,084,786,035.56/419,428.50
  6. Step 6: Final answer
    x = 1,061,169.63

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.