Home / 764,734.80-1,146,431.50-291,105.12

Finding the Fourth Proportional to 764,734.80, 1,146,431.50 and 291,105.12

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Solution

The fourth proportional to 764,734.80, 1,146,431.50 and 291,105.12 is: 436,402.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,734.80 : 1,146,431.50 = 291,105.12 : x
  2. Step 2: Convert to fraction form
    764,734.80/1,146,431.50 = 291,105.12/x
  3. Step 3: Cross multiply
    764,734.80x = 1,146,431.50 × 291,105.12
  4. Step 4: Simplify right side
    764,734.80x = 333,732,079,379.28
  5. Step 5: Solve for x
    x = 333,732,079,379.28/764,734.80
  6. Step 6: Final answer
    x = 436,402.37

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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.