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Finding the Third Proportional to 392,878 and 843,104

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Solution

The third proportional to 392,878 and 843,104 is: 1,809,275.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,878 : 843,104 = 843,104 : x
  2. Step 2: Convert to fraction form
    392,878/843,104 = 843,104/x
  3. Step 3: Cross multiply
    392,878x = 843,104 × 843,104
  4. Step 4: Simplify right side
    392,878x = 710,824,354,816
  5. Step 5: Solve for x
    x = 710,824,354,816/392,878
  6. Step 6: Final answer
    x = 1,809,275.03

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.