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Finding the Third Proportional to 207,820 and 450,620

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Solution

The third proportional to 207,820 and 450,620 is: 977,087.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,820 : 450,620 = 450,620 : x
  2. Step 2: Convert to fraction form
    207,820/450,620 = 450,620/x
  3. Step 3: Cross multiply
    207,820x = 450,620 × 450,620
  4. Step 4: Simplify right side
    207,820x = 203,058,384,400
  5. Step 5: Solve for x
    x = 203,058,384,400/207,820
  6. Step 6: Final answer
    x = 977,087.79

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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.