Home / 8,971,981,480.79-12,382,040,238.19-5,109,680,394.39

Finding the Fourth Proportional to 8,971,981,480.79, 12,382,040,238.19 and 5,109,680,394.39

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Solution

The fourth proportional to 8,971,981,480.79, 12,382,040,238.19 and 5,109,680,394.39 is: 7,051,760,905.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971,981,480.79 : 12,382,040,238.19 = 5,109,680,394.39 : x
  2. Step 2: Convert to fraction form
    8,971,981,480.79/12,382,040,238.19 = 5,109,680,394.39/x
  3. Step 3: Cross multiply
    8,971,981,480.79x = 12,382,040,238.19 × 5,109,680,394.39
  4. Step 4: Simplify right side
    8,971,981,480.79x = 63,268,268,247,617,314,816
  5. Step 5: Solve for x
    x = 63,268,268,247,617,314,816/8,971,981,480.79
  6. Step 6: Final answer
    x = 7,051,760,905.12

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Double scale
Find fourth proportional to 8,971,981,481.79, 12,382,040,239.57 and 5,109,680,395.39
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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.