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Finding the Third Proportional to 378,820 and 770,695

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Solution

The third proportional to 378,820 and 770,695 is: 1,567,949.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,820 : 770,695 = 770,695 : x
  2. Step 2: Convert to fraction form
    378,820/770,695 = 770,695/x
  3. Step 3: Cross multiply
    378,820x = 770,695 × 770,695
  4. Step 4: Simplify right side
    378,820x = 593,970,783,025
  5. Step 5: Solve for x
    x = 593,970,783,025/378,820
  6. Step 6: Final answer
    x = 1,567,949.91

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.