Home / 711,081.14-981,291.98-388,791.24

Finding the Fourth Proportional to 711,081.14, 981,291.98 and 388,791.24

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Solution

The fourth proportional to 711,081.14, 981,291.98 and 388,791.24 is: 536,531.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,081.14 : 981,291.98 = 388,791.24 : x
  2. Step 2: Convert to fraction form
    711,081.14/981,291.98 = 388,791.24/x
  3. Step 3: Cross multiply
    711,081.14x = 981,291.98 × 388,791.24
  4. Step 4: Simplify right side
    711,081.14x = 381,517,723,993.65
  5. Step 5: Solve for x
    x = 381,517,723,993.65/711,081.14
  6. Step 6: Final answer
    x = 536,531.91

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.