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Finding the Third Proportional to 363,890 and 789,940

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Solution

The third proportional to 363,890 and 789,940 is: 1,714,818.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,890 : 789,940 = 789,940 : x
  2. Step 2: Convert to fraction form
    363,890/789,940 = 789,940/x
  3. Step 3: Cross multiply
    363,890x = 789,940 × 789,940
  4. Step 4: Simplify right side
    363,890x = 624,005,203,600
  5. Step 5: Solve for x
    x = 624,005,203,600/363,890
  6. Step 6: Final answer
    x = 1,714,818.22

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.