Home / 457,736.20-686,604.30-388,616.20

Finding the Fourth Proportional to 457,736.20, 686,604.30 and 388,616.20

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Solution

The fourth proportional to 457,736.20, 686,604.30 and 388,616.20 is: 582,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,736.20 : 686,604.30 = 388,616.20 : x
  2. Step 2: Convert to fraction form
    457,736.20/686,604.30 = 388,616.20/x
  3. Step 3: Cross multiply
    457,736.20x = 686,604.30 × 388,616.20
  4. Step 4: Simplify right side
    457,736.20x = 266,825,553,969.66
  5. Step 5: Solve for x
    x = 266,825,553,969.66/457,736.20
  6. Step 6: Final answer
    x = 582,924.30

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Similar ratio
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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.