Home / 764,745.20-1,147,117.80-266,109.20

Finding the Fourth Proportional to 764,745.20, 1,147,117.80 and 266,109.20

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Solution

The fourth proportional to 764,745.20, 1,147,117.80 and 266,109.20 is: 399,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,745.20 : 1,147,117.80 = 266,109.20 : x
  2. Step 2: Convert to fraction form
    764,745.20/1,147,117.80 = 266,109.20/x
  3. Step 3: Cross multiply
    764,745.20x = 1,147,117.80 × 266,109.20
  4. Step 4: Simplify right side
    764,745.20x = 305,258,600,063.76
  5. Step 5: Solve for x
    x = 305,258,600,063.76/764,745.20
  6. Step 6: Final answer
    x = 399,163.80

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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.