Home / 809,086.20-1,213,629.30-509,904.60

Finding the Fourth Proportional to 809,086.20, 1,213,629.30 and 509,904.60

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Solution

The fourth proportional to 809,086.20, 1,213,629.30 and 509,904.60 is: 764,856.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,086.20 : 1,213,629.30 = 509,904.60 : x
  2. Step 2: Convert to fraction form
    809,086.20/1,213,629.30 = 509,904.60/x
  3. Step 3: Cross multiply
    809,086.20x = 1,213,629.30 × 509,904.60
  4. Step 4: Simplify right side
    809,086.20x = 618,835,162,764.78
  5. Step 5: Solve for x
    x = 618,835,162,764.78/809,086.20
  6. Step 6: Final answer
    x = 764,856.90

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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.