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Finding the Third Proportional to 408,113 and 865,629

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Solution

The third proportional to 408,113 and 865,629 is: 1,836,044.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,113 : 865,629 = 865,629 : x
  2. Step 2: Convert to fraction form
    408,113/865,629 = 865,629/x
  3. Step 3: Cross multiply
    408,113x = 865,629 × 865,629
  4. Step 4: Simplify right side
    408,113x = 749,313,565,641
  5. Step 5: Solve for x
    x = 749,313,565,641/408,113
  6. Step 6: Final answer
    x = 1,836,044.34

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.