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Finding the Third Proportional to 491,724 and 742,108

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Solution

The third proportional to 491,724 and 742,108 is: 1,119,986.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,724 : 742,108 = 742,108 : x
  2. Step 2: Convert to fraction form
    491,724/742,108 = 742,108/x
  3. Step 3: Cross multiply
    491,724x = 742,108 × 742,108
  4. Step 4: Simplify right side
    491,724x = 550,724,283,664
  5. Step 5: Solve for x
    x = 550,724,283,664/491,724
  6. Step 6: Final answer
    x = 1,119,986.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.