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Finding the Third Proportional to 489,320 and 756,244

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Solution

The third proportional to 489,320 and 756,244 is: 1,168,775.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,320 : 756,244 = 756,244 : x
  2. Step 2: Convert to fraction form
    489,320/756,244 = 756,244/x
  3. Step 3: Cross multiply
    489,320x = 756,244 × 756,244
  4. Step 4: Simplify right side
    489,320x = 571,904,987,536
  5. Step 5: Solve for x
    x = 571,904,987,536/489,320
  6. Step 6: Final answer
    x = 1,168,775.01

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.