Home / 386,704.08-579,831.30-258,766.56

Finding the Fourth Proportional to 386,704.08, 579,831.30 and 258,766.56

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Solution

The fourth proportional to 386,704.08, 579,831.30 and 258,766.56 is: 387,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,704.08 : 579,831.30 = 258,766.56 : x
  2. Step 2: Convert to fraction form
    386,704.08/579,831.30 = 258,766.56/x
  3. Step 3: Cross multiply
    386,704.08x = 579,831.30 × 258,766.56
  4. Step 4: Simplify right side
    386,704.08x = 150,040,950,881.33
  5. Step 5: Solve for x
    x = 150,040,950,881.33/386,704.08
  6. Step 6: Final answer
    x = 387,999.40

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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.