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Finding the Third Proportional to 648,917 and 1,393,818

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Solution

The third proportional to 648,917 and 1,393,818 is: 2,993,801.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,917 : 1,393,818 = 1,393,818 : x
  2. Step 2: Convert to fraction form
    648,917/1,393,818 = 1,393,818/x
  3. Step 3: Cross multiply
    648,917x = 1,393,818 × 1,393,818
  4. Step 4: Simplify right side
    648,917x = 1,942,728,617,124
  5. Step 5: Solve for x
    x = 1,942,728,617,124/648,917
  6. Step 6: Final answer
    x = 2,993,801.39

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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.