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Finding the Third Proportional to 387,246 and 843,389

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Solution

The third proportional to 387,246 and 843,389 is: 1,836,829.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,246 : 843,389 = 843,389 : x
  2. Step 2: Convert to fraction form
    387,246/843,389 = 843,389/x
  3. Step 3: Cross multiply
    387,246x = 843,389 × 843,389
  4. Step 4: Simplify right side
    387,246x = 711,305,005,321
  5. Step 5: Solve for x
    x = 711,305,005,321/387,246
  6. Step 6: Final answer
    x = 1,836,829.83

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.