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Finding the Third Proportional to 397,768 and 775,376

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Solution

The third proportional to 397,768 and 775,376 is: 1,511,453.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,768 : 775,376 = 775,376 : x
  2. Step 2: Convert to fraction form
    397,768/775,376 = 775,376/x
  3. Step 3: Cross multiply
    397,768x = 775,376 × 775,376
  4. Step 4: Simplify right side
    397,768x = 601,207,941,376
  5. Step 5: Solve for x
    x = 601,207,941,376/397,768
  6. Step 6: Final answer
    x = 1,511,453.77

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.