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Finding the Third Proportional to 381,656 and 560,816

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Solution

The third proportional to 381,656 and 560,816 is: 824,078.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,656 : 560,816 = 560,816 : x
  2. Step 2: Convert to fraction form
    381,656/560,816 = 560,816/x
  3. Step 3: Cross multiply
    381,656x = 560,816 × 560,816
  4. Step 4: Simplify right side
    381,656x = 314,514,585,856
  5. Step 5: Solve for x
    x = 314,514,585,856/381,656
  6. Step 6: Final answer
    x = 824,078.71

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.