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Finding the Third Proportional to 275,740 and 442,404

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Solution

The third proportional to 275,740 and 442,404 is: 709,803.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,740 : 442,404 = 442,404 : x
  2. Step 2: Convert to fraction form
    275,740/442,404 = 442,404/x
  3. Step 3: Cross multiply
    275,740x = 442,404 × 442,404
  4. Step 4: Simplify right side
    275,740x = 195,721,299,216
  5. Step 5: Solve for x
    x = 195,721,299,216/275,740
  6. Step 6: Final answer
    x = 709,803.80

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.