Home / 764,742.70-1,147,114.05-266,106.70

Finding the Fourth Proportional to 764,742.70, 1,147,114.05 and 266,106.70

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Solution

The fourth proportional to 764,742.70, 1,147,114.05 and 266,106.70 is: 399,160.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,742.70 : 1,147,114.05 = 266,106.70 : x
  2. Step 2: Convert to fraction form
    764,742.70/1,147,114.05 = 266,106.70/x
  3. Step 3: Cross multiply
    764,742.70x = 1,147,114.05 × 266,106.70
  4. Step 4: Simplify right side
    764,742.70x = 305,254,734,369.14
  5. Step 5: Solve for x
    x = 305,254,734,369.14/764,742.70
  6. Step 6: Final answer
    x = 399,160.05

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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.