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Finding the Third Proportional to 747,678 and 1,640,107

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Solution

The third proportional to 747,678 and 1,640,107 is: 3,597,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,678 : 1,640,107 = 1,640,107 : x
  2. Step 2: Convert to fraction form
    747,678/1,640,107 = 1,640,107/x
  3. Step 3: Cross multiply
    747,678x = 1,640,107 × 1,640,107
  4. Step 4: Simplify right side
    747,678x = 2,689,950,971,449
  5. Step 5: Solve for x
    x = 2,689,950,971,449/747,678
  6. Step 6: Final answer
    x = 3,597,739.90

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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.