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Finding the Third Proportional to 979,813 and 1,998,991

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Solution

The third proportional to 979,813 and 1,998,991 is: 4,078,293.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,813 : 1,998,991 = 1,998,991 : x
  2. Step 2: Convert to fraction form
    979,813/1,998,991 = 1,998,991/x
  3. Step 3: Cross multiply
    979,813x = 1,998,991 × 1,998,991
  4. Step 4: Simplify right side
    979,813x = 3,995,965,018,081
  5. Step 5: Solve for x
    x = 3,995,965,018,081/979,813
  6. Step 6: Final answer
    x = 4,078,293.53

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.