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Finding the Third Proportional to 621,792 and 1,338,718

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Solution

The third proportional to 621,792 and 1,338,718 is: 2,882,259.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,792 : 1,338,718 = 1,338,718 : x
  2. Step 2: Convert to fraction form
    621,792/1,338,718 = 1,338,718/x
  3. Step 3: Cross multiply
    621,792x = 1,338,718 × 1,338,718
  4. Step 4: Simplify right side
    621,792x = 1,792,165,883,524
  5. Step 5: Solve for x
    x = 1,792,165,883,524/621,792
  6. Step 6: Final answer
    x = 2,882,259.48

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.