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Finding the Third Proportional to 918,079 and 1,988,617

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Solution

The third proportional to 918,079 and 1,988,617 is: 4,307,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,079 : 1,988,617 = 1,988,617 : x
  2. Step 2: Convert to fraction form
    918,079/1,988,617 = 1,988,617/x
  3. Step 3: Cross multiply
    918,079x = 1,988,617 × 1,988,617
  4. Step 4: Simplify right side
    918,079x = 3,954,597,572,689
  5. Step 5: Solve for x
    x = 3,954,597,572,689/918,079
  6. Step 6: Final answer
    x = 4,307,469.81

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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.