Home / 578,481.27-868,281.64-279,172.55

Finding the Fourth Proportional to 578,481.27, 868,281.64 and 279,172.55

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Solution

The fourth proportional to 578,481.27, 868,281.64 and 279,172.55 is: 419,028.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,481.27 : 868,281.64 = 279,172.55 : x
  2. Step 2: Convert to fraction form
    578,481.27/868,281.64 = 279,172.55/x
  3. Step 3: Cross multiply
    578,481.27x = 868,281.64 × 279,172.55
  4. Step 4: Simplify right side
    578,481.27x = 242,400,399,556.98
  5. Step 5: Solve for x
    x = 242,400,399,556.98/578,481.27
  6. Step 6: Final answer
    x = 419,028.95

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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.