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Finding the Third Proportional to 368,640 and 550,422

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Solution

The third proportional to 368,640 and 550,422 is: 821,843.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,640 : 550,422 = 550,422 : x
  2. Step 2: Convert to fraction form
    368,640/550,422 = 550,422/x
  3. Step 3: Cross multiply
    368,640x = 550,422 × 550,422
  4. Step 4: Simplify right side
    368,640x = 302,964,378,084
  5. Step 5: Solve for x
    x = 302,964,378,084/368,640
  6. Step 6: Final answer
    x = 821,843.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.