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Finding the Third Proportional to 635,940 and 891,330

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Solution

The third proportional to 635,940 and 891,330 is: 1,249,283.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,940 : 891,330 = 891,330 : x
  2. Step 2: Convert to fraction form
    635,940/891,330 = 891,330/x
  3. Step 3: Cross multiply
    635,940x = 891,330 × 891,330
  4. Step 4: Simplify right side
    635,940x = 794,469,168,900
  5. Step 5: Solve for x
    x = 794,469,168,900/635,940
  6. Step 6: Final answer
    x = 1,249,283.22

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.