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Finding the Third Proportional to 307,408 and 667,328

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Solution

The third proportional to 307,408 and 667,328 is: 1,448,650.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,408 : 667,328 = 667,328 : x
  2. Step 2: Convert to fraction form
    307,408/667,328 = 667,328/x
  3. Step 3: Cross multiply
    307,408x = 667,328 × 667,328
  4. Step 4: Simplify right side
    307,408x = 445,326,659,584
  5. Step 5: Solve for x
    x = 445,326,659,584/307,408
  6. Step 6: Final answer
    x = 1,448,650.20

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.