Home / 764,163.20-1,146,244.80-445,298.60

Finding the Fourth Proportional to 764,163.20, 1,146,244.80 and 445,298.60

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Solution

The fourth proportional to 764,163.20, 1,146,244.80 and 445,298.60 is: 667,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,163.20 : 1,146,244.80 = 445,298.60 : x
  2. Step 2: Convert to fraction form
    764,163.20/1,146,244.80 = 445,298.60/x
  3. Step 3: Cross multiply
    764,163.20x = 1,146,244.80 × 445,298.60
  4. Step 4: Simplify right side
    764,163.20x = 510,421,204,697.28
  5. Step 5: Solve for x
    x = 510,421,204,697.28/764,163.20
  6. Step 6: Final answer
    x = 667,947.90

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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.