Home / 397,138.92-591,504.20-395,203.43

Finding the Fourth Proportional to 397,138.92, 591,504.20 and 395,203.43

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Solution

The fourth proportional to 397,138.92, 591,504.20 and 395,203.43 is: 588,621.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,138.92 : 591,504.20 = 395,203.43 : x
  2. Step 2: Convert to fraction form
    397,138.92/591,504.20 = 395,203.43/x
  3. Step 3: Cross multiply
    397,138.92x = 591,504.20 × 395,203.43
  4. Step 4: Simplify right side
    397,138.92x = 233,764,488,699.41
  5. Step 5: Solve for x
    x = 233,764,488,699.41/397,138.92
  6. Step 6: Final answer
    x = 588,621.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.