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Finding the Third Proportional to 553,867 and 829,876

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Solution

The third proportional to 553,867 and 829,876 is: 1,243,428.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,867 : 829,876 = 829,876 : x
  2. Step 2: Convert to fraction form
    553,867/829,876 = 829,876/x
  3. Step 3: Cross multiply
    553,867x = 829,876 × 829,876
  4. Step 4: Simplify right side
    553,867x = 688,694,175,376
  5. Step 5: Solve for x
    x = 688,694,175,376/553,867
  6. Step 6: Final answer
    x = 1,243,428.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.