Home / 394,570.48-591,911.88-128,245.36

Finding the Fourth Proportional to 394,570.48, 591,911.88 and 128,245.36

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Solution

The fourth proportional to 394,570.48, 591,911.88 and 128,245.36 is: 192,386.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,570.48 : 591,911.88 = 128,245.36 : x
  2. Step 2: Convert to fraction form
    394,570.48/591,911.88 = 128,245.36/x
  3. Step 3: Cross multiply
    394,570.48x = 591,911.88 × 128,245.36
  4. Step 4: Simplify right side
    394,570.48x = 75,909,952,138.88
  5. Step 5: Solve for x
    x = 75,909,952,138.88/394,570.48
  6. Step 6: Final answer
    x = 192,386.29

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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.