Home / 456,724.80-685,087.20-323,755.20

Finding the Fourth Proportional to 456,724.80, 685,087.20 and 323,755.20

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Solution

The fourth proportional to 456,724.80, 685,087.20 and 323,755.20 is: 485,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,724.80 : 685,087.20 = 323,755.20 : x
  2. Step 2: Convert to fraction form
    456,724.80/685,087.20 = 323,755.20/x
  3. Step 3: Cross multiply
    456,724.80x = 685,087.20 × 323,755.20
  4. Step 4: Simplify right side
    456,724.80x = 221,800,543,453.44
  5. Step 5: Solve for x
    x = 221,800,543,453.44/456,724.80
  6. Step 6: Final answer
    x = 485,632.80

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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.