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Finding the Third Proportional to 380,544 and 811,754

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Solution

The third proportional to 380,544 and 811,754 is: 1,731,585.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,544 : 811,754 = 811,754 : x
  2. Step 2: Convert to fraction form
    380,544/811,754 = 811,754/x
  3. Step 3: Cross multiply
    380,544x = 811,754 × 811,754
  4. Step 4: Simplify right side
    380,544x = 658,944,556,516
  5. Step 5: Solve for x
    x = 658,944,556,516/380,544
  6. Step 6: Final answer
    x = 1,731,585.72

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.