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Finding the Fourth Proportional to 550,716.38, 760,001.69 and 309,016.82

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Solution

The fourth proportional to 550,716.38, 760,001.69 and 309,016.82 is: 426,450.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,716.38 : 760,001.69 = 309,016.82 : x
  2. Step 2: Convert to fraction form
    550,716.38/760,001.69 = 309,016.82/x
  3. Step 3: Cross multiply
    550,716.38x = 760,001.69 × 309,016.82
  4. Step 4: Simplify right side
    550,716.38x = 234,853,305,438.43
  5. Step 5: Solve for x
    x = 234,853,305,438.43/550,716.38
  6. Step 6: Final answer
    x = 426,450.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.