Home / 1,138,078.23-1,568,723.88-770,439.43

Finding the Fourth Proportional to 1,138,078.23, 1,568,723.88 and 770,439.43

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Solution

The fourth proportional to 1,138,078.23, 1,568,723.88 and 770,439.43 is: 1,061,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,078.23 : 1,568,723.88 = 770,439.43 : x
  2. Step 2: Convert to fraction form
    1,138,078.23/1,568,723.88 = 770,439.43/x
  3. Step 3: Cross multiply
    1,138,078.23x = 1,568,723.88 × 770,439.43
  4. Step 4: Simplify right side
    1,138,078.23x = 1,208,606,731,934.59
  5. Step 5: Solve for x
    x = 1,208,606,731,934.59/1,138,078.23
  6. Step 6: Final answer
    x = 1,061,971.58

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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.