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Finding the Third Proportional to 491,230 and 781,133

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Solution

The third proportional to 491,230 and 781,133 is: 1,242,124.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,230 : 781,133 = 781,133 : x
  2. Step 2: Convert to fraction form
    491,230/781,133 = 781,133/x
  3. Step 3: Cross multiply
    491,230x = 781,133 × 781,133
  4. Step 4: Simplify right side
    491,230x = 610,168,763,689
  5. Step 5: Solve for x
    x = 610,168,763,689/491,230
  6. Step 6: Final answer
    x = 1,242,124.39

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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.