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Finding the Third Proportional to 918,107 and 1,988,674

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Solution

The third proportional to 918,107 and 1,988,674 is: 4,307,585.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,107 : 1,988,674 = 1,988,674 : x
  2. Step 2: Convert to fraction form
    918,107/1,988,674 = 1,988,674/x
  3. Step 3: Cross multiply
    918,107x = 1,988,674 × 1,988,674
  4. Step 4: Simplify right side
    918,107x = 3,954,824,278,276
  5. Step 5: Solve for x
    x = 3,954,824,278,276/918,107
  6. Step 6: Final answer
    x = 4,307,585.37

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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.