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Finding the Third Proportional to 682,672 and 905,876

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Solution

The third proportional to 682,672 and 905,876 is: 1,202,057.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,672 : 905,876 = 905,876 : x
  2. Step 2: Convert to fraction form
    682,672/905,876 = 905,876/x
  3. Step 3: Cross multiply
    682,672x = 905,876 × 905,876
  4. Step 4: Simplify right side
    682,672x = 820,611,327,376
  5. Step 5: Solve for x
    x = 820,611,327,376/682,672
  6. Step 6: Final answer
    x = 1,202,057.98

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.