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Finding the Third Proportional to 203,790 and 479,509

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Solution

The third proportional to 203,790 and 479,509 is: 1,128,263.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,790 : 479,509 = 479,509 : x
  2. Step 2: Convert to fraction form
    203,790/479,509 = 479,509/x
  3. Step 3: Cross multiply
    203,790x = 479,509 × 479,509
  4. Step 4: Simplify right side
    203,790x = 229,928,881,081
  5. Step 5: Solve for x
    x = 229,928,881,081/203,790
  6. Step 6: Final answer
    x = 1,128,263.81

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.