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Finding the Third Proportional to 278,112 and 611,504

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Solution

The third proportional to 278,112 and 611,504 is: 1,344,555.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,112 : 611,504 = 611,504 : x
  2. Step 2: Convert to fraction form
    278,112/611,504 = 611,504/x
  3. Step 3: Cross multiply
    278,112x = 611,504 × 611,504
  4. Step 4: Simplify right side
    278,112x = 373,937,142,016
  5. Step 5: Solve for x
    x = 373,937,142,016/278,112
  6. Step 6: Final answer
    x = 1,344,555.94

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.