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Finding the Third Proportional to 455,993 and 989,867

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Solution

The third proportional to 455,993 and 989,867 is: 2,148,797.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,993 : 989,867 = 989,867 : x
  2. Step 2: Convert to fraction form
    455,993/989,867 = 989,867/x
  3. Step 3: Cross multiply
    455,993x = 989,867 × 989,867
  4. Step 4: Simplify right side
    455,993x = 979,836,677,689
  5. Step 5: Solve for x
    x = 979,836,677,689/455,993
  6. Step 6: Final answer
    x = 2,148,797.63

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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.