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Finding the Third Proportional to 621,717 and 1,331,643

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Solution

The third proportional to 621,717 and 1,331,643 is: 2,852,219.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,717 : 1,331,643 = 1,331,643 : x
  2. Step 2: Convert to fraction form
    621,717/1,331,643 = 1,331,643/x
  3. Step 3: Cross multiply
    621,717x = 1,331,643 × 1,331,643
  4. Step 4: Simplify right side
    621,717x = 1,773,273,079,449
  5. Step 5: Solve for x
    x = 1,773,273,079,449/621,717
  6. Step 6: Final answer
    x = 2,852,219.06

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.