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Finding the Third Proportional to 486,286.50 and 781,326

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Solution

The third proportional to 486,286.50 and 781,326 is: 1,255,371.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,286.50 : 781,326 = 781,326 : x
  2. Step 2: Convert to fraction form
    486,286.50/781,326 = 781,326/x
  3. Step 3: Cross multiply
    486,286.50x = 781,326 × 781,326
  4. Step 4: Simplify right side
    486,286.50x = 610,470,318,276
  5. Step 5: Solve for x
    x = 610,470,318,276/486,286.50
  6. Step 6: Final answer
    x = 1,255,371.72

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.