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Finding the Third Proportional to 380,189 and 823,099

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Solution

The third proportional to 380,189 and 823,099 is: 1,781,987.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,189 : 823,099 = 823,099 : x
  2. Step 2: Convert to fraction form
    380,189/823,099 = 823,099/x
  3. Step 3: Cross multiply
    380,189x = 823,099 × 823,099
  4. Step 4: Simplify right side
    380,189x = 677,491,963,801
  5. Step 5: Solve for x
    x = 677,491,963,801/380,189
  6. Step 6: Final answer
    x = 1,781,987.28

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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.