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Finding the Third Proportional to 310,112 and 491,856

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Solution

The third proportional to 310,112 and 491,856 is: 780,112.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,112 : 491,856 = 491,856 : x
  2. Step 2: Convert to fraction form
    310,112/491,856 = 491,856/x
  3. Step 3: Cross multiply
    310,112x = 491,856 × 491,856
  4. Step 4: Simplify right side
    310,112x = 241,922,324,736
  5. Step 5: Solve for x
    x = 241,922,324,736/310,112
  6. Step 6: Final answer
    x = 780,112.75

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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.