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Finding the Third Proportional to 349,738 and 513,128

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Solution

The third proportional to 349,738 and 513,128 is: 752,850.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,738 : 513,128 = 513,128 : x
  2. Step 2: Convert to fraction form
    349,738/513,128 = 513,128/x
  3. Step 3: Cross multiply
    349,738x = 513,128 × 513,128
  4. Step 4: Simplify right side
    349,738x = 263,300,344,384
  5. Step 5: Solve for x
    x = 263,300,344,384/349,738
  6. Step 6: Final answer
    x = 752,850.26

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.