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Finding the Third Proportional to 454,408 and 712,981

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Solution

The third proportional to 454,408 and 712,981 is: 1,118,690.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,408 : 712,981 = 712,981 : x
  2. Step 2: Convert to fraction form
    454,408/712,981 = 712,981/x
  3. Step 3: Cross multiply
    454,408x = 712,981 × 712,981
  4. Step 4: Simplify right side
    454,408x = 508,341,906,361
  5. Step 5: Solve for x
    x = 508,341,906,361/454,408
  6. Step 6: Final answer
    x = 1,118,690.49

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.