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Finding the Third Proportional to 311,067 and 682,401

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Solution

The third proportional to 311,067 and 682,401 is: 1,497,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,067 : 682,401 = 682,401 : x
  2. Step 2: Convert to fraction form
    311,067/682,401 = 682,401/x
  3. Step 3: Cross multiply
    311,067x = 682,401 × 682,401
  4. Step 4: Simplify right side
    311,067x = 465,671,124,801
  5. Step 5: Solve for x
    x = 465,671,124,801/311,067
  6. Step 6: Final answer
    x = 1,497,012.30

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.