Home / 419,825.76-579,031.92-268,936.80

Finding the Fourth Proportional to 419,825.76, 579,031.92 and 268,936.80

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Solution

The fourth proportional to 419,825.76, 579,031.92 and 268,936.80 is: 370,922.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,825.76 : 579,031.92 = 268,936.80 : x
  2. Step 2: Convert to fraction form
    419,825.76/579,031.92 = 268,936.80/x
  3. Step 3: Cross multiply
    419,825.76x = 579,031.92 × 268,936.80
  4. Step 4: Simplify right side
    419,825.76x = 155,722,991,662.66
  5. Step 5: Solve for x
    x = 155,722,991,662.66/419,825.76
  6. Step 6: Final answer
    x = 370,922.91

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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.