Home / 378,991,025.80-568,486,538.70-231,675,580.60

Finding the Fourth Proportional to 378,991,025.80, 568,486,538.70 and 231,675,580.60

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Solution

The fourth proportional to 378,991,025.80, 568,486,538.70 and 231,675,580.60 is: 347,513,370.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,991,025.80 : 568,486,538.70 = 231,675,580.60 : x
  2. Step 2: Convert to fraction form
    378,991,025.80/568,486,538.70 = 231,675,580.60/x
  3. Step 3: Cross multiply
    378,991,025.80x = 568,486,538.70 × 231,675,580.60
  4. Step 4: Simplify right side
    378,991,025.80x = 131,704,448,916,606,880
  5. Step 5: Solve for x
    x = 131,704,448,916,606,880/378,991,025.80
  6. Step 6: Final answer
    x = 347,513,370.90

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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.