Home / 658,974.71-987,060.42-388,811.69

Finding the Fourth Proportional to 658,974.71, 987,060.42 and 388,811.69

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Solution

The fourth proportional to 658,974.71, 987,060.42 and 388,811.69 is: 582,390.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,974.71 : 987,060.42 = 388,811.69 : x
  2. Step 2: Convert to fraction form
    658,974.71/987,060.42 = 388,811.69/x
  3. Step 3: Cross multiply
    658,974.71x = 987,060.42 × 388,811.69
  4. Step 4: Simplify right side
    658,974.71x = 383,780,633,803.93
  5. Step 5: Solve for x
    x = 383,780,633,803.93/658,974.71
  6. Step 6: Final answer
    x = 582,390.54

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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.