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Finding the Third Proportional to 291,250 and 622,990

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Solution

The third proportional to 291,250 and 622,990 is: 1,332,588.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,250 : 622,990 = 622,990 : x
  2. Step 2: Convert to fraction form
    291,250/622,990 = 622,990/x
  3. Step 3: Cross multiply
    291,250x = 622,990 × 622,990
  4. Step 4: Simplify right side
    291,250x = 388,116,540,100
  5. Step 5: Solve for x
    x = 388,116,540,100/291,250
  6. Step 6: Final answer
    x = 1,332,588.98

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.