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Finding the Third Proportional to 293,170 and 642,450

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Solution

The third proportional to 293,170 and 642,450 is: 1,407,858.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,170 : 642,450 = 642,450 : x
  2. Step 2: Convert to fraction form
    293,170/642,450 = 642,450/x
  3. Step 3: Cross multiply
    293,170x = 642,450 × 642,450
  4. Step 4: Simplify right side
    293,170x = 412,742,002,500
  5. Step 5: Solve for x
    x = 412,742,002,500/293,170
  6. Step 6: Final answer
    x = 1,407,858.93

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.