Home / 387,290,914.38-580,936,016.61-121,398,538.65

Finding the Fourth Proportional to 387,290,914.38, 580,936,016.61 and 121,398,538.65

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Solution

The fourth proportional to 387,290,914.38, 580,936,016.61 and 121,398,538.65 is: 182,097,696.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,290,914.38 : 580,936,016.61 = 121,398,538.65 : x
  2. Step 2: Convert to fraction form
    387,290,914.38/580,936,016.61 = 121,398,538.65/x
  3. Step 3: Cross multiply
    387,290,914.38x = 580,936,016.61 × 121,398,538.65
  4. Step 4: Simplify right side
    387,290,914.38x = 70,524,783,465,606,136
  5. Step 5: Solve for x
    x = 70,524,783,465,606,136/387,290,914.38
  6. Step 6: Final answer
    x = 182,097,696.71

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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.