Home / 399,080.20-598,620.30-189,128.20

Finding the Fourth Proportional to 399,080.20, 598,620.30 and 189,128.20

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Solution

The fourth proportional to 399,080.20, 598,620.30 and 189,128.20 is: 283,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,080.20 : 598,620.30 = 189,128.20 : x
  2. Step 2: Convert to fraction form
    399,080.20/598,620.30 = 189,128.20/x
  3. Step 3: Cross multiply
    399,080.20x = 598,620.30 × 189,128.20
  4. Step 4: Simplify right side
    399,080.20x = 113,215,979,822.46
  5. Step 5: Solve for x
    x = 113,215,979,822.46/399,080.20
  6. Step 6: Final answer
    x = 283,692.30

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1.5x scale

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.