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Finding the Fourth Proportional to 658,174.82, 987,626.52 and 321,218.26

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Solution

The fourth proportional to 658,174.82, 987,626.52 and 321,218.26 is: 482,005.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,174.82 : 987,626.52 = 321,218.26 : x
  2. Step 2: Convert to fraction form
    658,174.82/987,626.52 = 321,218.26/x
  3. Step 3: Cross multiply
    658,174.82x = 987,626.52 × 321,218.26
  4. Step 4: Simplify right side
    658,174.82x = 317,243,669,815.19
  5. Step 5: Solve for x
    x = 317,243,669,815.19/658,174.82
  6. Step 6: Final answer
    x = 482,005.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.