Home / 521,976.62-720,315.74-304,171.43

Finding the Fourth Proportional to 521,976.62, 720,315.74 and 304,171.43

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Solution

The fourth proportional to 521,976.62, 720,315.74 and 304,171.43 is: 419,749.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,976.62 : 720,315.74 = 304,171.43 : x
  2. Step 2: Convert to fraction form
    521,976.62/720,315.74 = 304,171.43/x
  3. Step 3: Cross multiply
    521,976.62x = 720,315.74 × 304,171.43
  4. Step 4: Simplify right side
    521,976.62x = 219,099,465,846.16
  5. Step 5: Solve for x
    x = 219,099,465,846.16/521,976.62
  6. Step 6: Final answer
    x = 419,749.58

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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.