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Finding the Fourth Proportional to 521,791.53, 720,073.94 and 304,129.01

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Solution

The fourth proportional to 521,791.53, 720,073.94 and 304,129.01 is: 419,698.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,791.53 : 720,073.94 = 304,129.01 : x
  2. Step 2: Convert to fraction form
    521,791.53/720,073.94 = 304,129.01/x
  3. Step 3: Cross multiply
    521,791.53x = 720,073.94 × 304,129.01
  4. Step 4: Simplify right side
    521,791.53x = 218,995,369,377.99
  5. Step 5: Solve for x
    x = 218,995,369,377.99/521,791.53
  6. Step 6: Final answer
    x = 419,698.97

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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.