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Finding the Third Proportional to 421,304 and 935,920

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Solution

The third proportional to 421,304 and 935,920 is: 2,079,131.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,304 : 935,920 = 935,920 : x
  2. Step 2: Convert to fraction form
    421,304/935,920 = 935,920/x
  3. Step 3: Cross multiply
    421,304x = 935,920 × 935,920
  4. Step 4: Simplify right side
    421,304x = 875,946,246,400
  5. Step 5: Solve for x
    x = 875,946,246,400/421,304
  6. Step 6: Final answer
    x = 2,079,131.09

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.