Home / 764,942.80-1,147,414.20-315,514.30

Finding the Fourth Proportional to 764,942.80, 1,147,414.20 and 315,514.30

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Solution

The fourth proportional to 764,942.80, 1,147,414.20 and 315,514.30 is: 473,271.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,942.80 : 1,147,414.20 = 315,514.30 : x
  2. Step 2: Convert to fraction form
    764,942.80/1,147,414.20 = 315,514.30/x
  3. Step 3: Cross multiply
    764,942.80x = 1,147,414.20 × 315,514.30
  4. Step 4: Simplify right side
    764,942.80x = 362,025,588,123.06
  5. Step 5: Solve for x
    x = 362,025,588,123.06/764,942.80
  6. Step 6: Final answer
    x = 473,271.45

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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.