Home / 920,309.73-1,380,527.66-312,850.85

Finding the Fourth Proportional to 920,309.73, 1,380,527.66 and 312,850.85

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Solution

The fourth proportional to 920,309.73, 1,380,527.66 and 312,850.85 is: 469,297.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,309.73 : 1,380,527.66 = 312,850.85 : x
  2. Step 2: Convert to fraction form
    920,309.73/1,380,527.66 = 312,850.85/x
  3. Step 3: Cross multiply
    920,309.73x = 1,380,527.66 × 312,850.85
  4. Step 4: Simplify right side
    920,309.73x = 431,899,251,879.51
  5. Step 5: Solve for x
    x = 431,899,251,879.51/920,309.73
  6. Step 6: Final answer
    x = 469,297.71

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Double scale
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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.