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Finding the Third Proportional to 868,520 and 1,913,731

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Solution

The third proportional to 868,520 and 1,913,731 is: 4,216,789.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,520 : 1,913,731 = 1,913,731 : x
  2. Step 2: Convert to fraction form
    868,520/1,913,731 = 1,913,731/x
  3. Step 3: Cross multiply
    868,520x = 1,913,731 × 1,913,731
  4. Step 4: Simplify right side
    868,520x = 3,662,366,340,361
  5. Step 5: Solve for x
    x = 3,662,366,340,361/868,520
  6. Step 6: Final answer
    x = 4,216,789.87

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.