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Finding the Third Proportional to 205,671 and 450,690

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Solution

The third proportional to 205,671 and 450,690 is: 987,603.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,671 : 450,690 = 450,690 : x
  2. Step 2: Convert to fraction form
    205,671/450,690 = 450,690/x
  3. Step 3: Cross multiply
    205,671x = 450,690 × 450,690
  4. Step 4: Simplify right side
    205,671x = 203,121,476,100
  5. Step 5: Solve for x
    x = 203,121,476,100/205,671
  6. Step 6: Final answer
    x = 987,603.87

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.