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Finding the Third Proportional to 809,784 and 1,257,120

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Solution

The third proportional to 809,784 and 1,257,120 is: 1,951,570.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,784 : 1,257,120 = 1,257,120 : x
  2. Step 2: Convert to fraction form
    809,784/1,257,120 = 1,257,120/x
  3. Step 3: Cross multiply
    809,784x = 1,257,120 × 1,257,120
  4. Step 4: Simplify right side
    809,784x = 1,580,350,694,400
  5. Step 5: Solve for x
    x = 1,580,350,694,400/809,784
  6. Step 6: Final answer
    x = 1,951,570.66

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.