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Finding the Third Proportional to 387,272 and 838,872

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Solution

The third proportional to 387,272 and 838,872 is: 1,817,085.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,272 : 838,872 = 838,872 : x
  2. Step 2: Convert to fraction form
    387,272/838,872 = 838,872/x
  3. Step 3: Cross multiply
    387,272x = 838,872 × 838,872
  4. Step 4: Simplify right side
    387,272x = 703,706,232,384
  5. Step 5: Solve for x
    x = 703,706,232,384/387,272
  6. Step 6: Final answer
    x = 1,817,085.23

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.