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Finding the Third Proportional to 387,914 and 822,472

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Solution

The third proportional to 387,914 and 822,472 is: 1,743,840.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,914 : 822,472 = 822,472 : x
  2. Step 2: Convert to fraction form
    387,914/822,472 = 822,472/x
  3. Step 3: Cross multiply
    387,914x = 822,472 × 822,472
  4. Step 4: Simplify right side
    387,914x = 676,460,190,784
  5. Step 5: Solve for x
    x = 676,460,190,784/387,914
  6. Step 6: Final answer
    x = 1,743,840.62

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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.