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Finding the Third Proportional to 432,874 and 665,728

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Solution

The third proportional to 432,874 and 665,728 is: 1,023,840.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,874 : 665,728 = 665,728 : x
  2. Step 2: Convert to fraction form
    432,874/665,728 = 665,728/x
  3. Step 3: Cross multiply
    432,874x = 665,728 × 665,728
  4. Step 4: Simplify right side
    432,874x = 443,193,769,984
  5. Step 5: Solve for x
    x = 443,193,769,984/432,874
  6. Step 6: Final answer
    x = 1,023,840.12

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.