Home / 766,781.14-1,150,171.98-205,815.64

Finding the Fourth Proportional to 766,781.14, 1,150,171.98 and 205,815.64

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Solution

The fourth proportional to 766,781.14, 1,150,171.98 and 205,815.64 is: 308,723.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,781.14 : 1,150,171.98 = 205,815.64 : x
  2. Step 2: Convert to fraction form
    766,781.14/1,150,171.98 = 205,815.64/x
  3. Step 3: Cross multiply
    766,781.14x = 1,150,171.98 × 205,815.64
  4. Step 4: Simplify right side
    766,781.14x = 236,723,382,173.77
  5. Step 5: Solve for x
    x = 236,723,382,173.77/766,781.14
  6. Step 6: Final answer
    x = 308,723.53

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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.