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Finding the Third Proportional to 491,592 and 781,668

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Solution

The third proportional to 491,592 and 781,668 is: 1,242,910.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,592 : 781,668 = 781,668 : x
  2. Step 2: Convert to fraction form
    491,592/781,668 = 781,668/x
  3. Step 3: Cross multiply
    491,592x = 781,668 × 781,668
  4. Step 4: Simplify right side
    491,592x = 611,004,862,224
  5. Step 5: Solve for x
    x = 611,004,862,224/491,592
  6. Step 6: Final answer
    x = 1,242,910.51

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.