Home / 394,782.08-592,111.26-128,540.80

Finding the Fourth Proportional to 394,782.08, 592,111.26 and 128,540.80

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Solution

The fourth proportional to 394,782.08, 592,111.26 and 128,540.80 is: 192,791.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,782.08 : 592,111.26 = 128,540.80 : x
  2. Step 2: Convert to fraction form
    394,782.08/592,111.26 = 128,540.80/x
  3. Step 3: Cross multiply
    394,782.08x = 592,111.26 × 128,540.80
  4. Step 4: Simplify right side
    394,782.08x = 76,110,455,049.41
  5. Step 5: Solve for x
    x = 76,110,455,049.41/394,782.08
  6. Step 6: Final answer
    x = 192,791.06

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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.