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Finding the Third Proportional to 363,721 and 785,519

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Solution

The third proportional to 363,721 and 785,519 is: 1,696,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,721 : 785,519 = 785,519 : x
  2. Step 2: Convert to fraction form
    363,721/785,519 = 785,519/x
  3. Step 3: Cross multiply
    363,721x = 785,519 × 785,519
  4. Step 4: Simplify right side
    363,721x = 617,040,099,361
  5. Step 5: Solve for x
    x = 617,040,099,361/363,721
  6. Step 6: Final answer
    x = 1,696,465.42

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.