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Finding the Third Proportional to 421,722 and 910,802

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Solution

The third proportional to 421,722 and 910,802 is: 1,967,078.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,722 : 910,802 = 910,802 : x
  2. Step 2: Convert to fraction form
    421,722/910,802 = 910,802/x
  3. Step 3: Cross multiply
    421,722x = 910,802 × 910,802
  4. Step 4: Simplify right side
    421,722x = 829,560,283,204
  5. Step 5: Solve for x
    x = 829,560,283,204/421,722
  6. Step 6: Final answer
    x = 1,967,078.51

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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.