Home / 764,766.20-1,147,149.30-266,130.20

Finding the Fourth Proportional to 764,766.20, 1,147,149.30 and 266,130.20

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Solution

The fourth proportional to 764,766.20, 1,147,149.30 and 266,130.20 is: 399,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,766.20 : 1,147,149.30 = 266,130.20 : x
  2. Step 2: Convert to fraction form
    764,766.20/1,147,149.30 = 266,130.20/x
  3. Step 3: Cross multiply
    764,766.20x = 1,147,149.30 × 266,130.20
  4. Step 4: Simplify right side
    764,766.20x = 305,291,072,638.86
  5. Step 5: Solve for x
    x = 305,291,072,638.86/764,766.20
  6. Step 6: Final answer
    x = 399,195.30

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Half scale
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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.