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Finding the Third Proportional to 644,079 and 1,388,622

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Solution

The third proportional to 644,079 and 1,388,622 is: 2,993,842.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,079 : 1,388,622 = 1,388,622 : x
  2. Step 2: Convert to fraction form
    644,079/1,388,622 = 1,388,622/x
  3. Step 3: Cross multiply
    644,079x = 1,388,622 × 1,388,622
  4. Step 4: Simplify right side
    644,079x = 1,928,271,058,884
  5. Step 5: Solve for x
    x = 1,928,271,058,884/644,079
  6. Step 6: Final answer
    x = 2,993,842.46

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.