Home / 522,086.20-783,129.30-312,134.20

Finding the Fourth Proportional to 522,086.20, 783,129.30 and 312,134.20

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Solution

The fourth proportional to 522,086.20, 783,129.30 and 312,134.20 is: 468,201.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,086.20 : 783,129.30 = 312,134.20 : x
  2. Step 2: Convert to fraction form
    522,086.20/783,129.30 = 312,134.20/x
  3. Step 3: Cross multiply
    522,086.20x = 783,129.30 × 312,134.20
  4. Step 4: Simplify right side
    522,086.20x = 244,441,437,552.06
  5. Step 5: Solve for x
    x = 244,441,437,552.06/522,086.20
  6. Step 6: Final answer
    x = 468,201.30

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Double scale
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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.