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Finding the Third Proportional to 456,480 and 667,812

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Solution

The third proportional to 456,480 and 667,812 is: 976,982.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,480 : 667,812 = 667,812 : x
  2. Step 2: Convert to fraction form
    456,480/667,812 = 667,812/x
  3. Step 3: Cross multiply
    456,480x = 667,812 × 667,812
  4. Step 4: Simplify right side
    456,480x = 445,972,867,344
  5. Step 5: Solve for x
    x = 445,972,867,344/456,480
  6. Step 6: Final answer
    x = 976,982.27

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.