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Finding the Third Proportional to 985,000 and 2,156,831

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Solution

The third proportional to 985,000 and 2,156,831 is: 4,722,761.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,000 : 2,156,831 = 2,156,831 : x
  2. Step 2: Convert to fraction form
    985,000/2,156,831 = 2,156,831/x
  3. Step 3: Cross multiply
    985,000x = 2,156,831 × 2,156,831
  4. Step 4: Simplify right side
    985,000x = 4,651,919,962,561
  5. Step 5: Solve for x
    x = 4,651,919,962,561/985,000
  6. Step 6: Final answer
    x = 4,722,761.38

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.