Home / 1,188,161.82-1,639,750.05-678,853.26

Finding the Fourth Proportional to 1,188,161.82, 1,639,750.05 and 678,853.26

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Solution

The fourth proportional to 1,188,161.82, 1,639,750.05 and 678,853.26 is: 936,867.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,161.82 : 1,639,750.05 = 678,853.26 : x
  2. Step 2: Convert to fraction form
    1,188,161.82/1,639,750.05 = 678,853.26/x
  3. Step 3: Cross multiply
    1,188,161.82x = 1,639,750.05 × 678,853.26
  4. Step 4: Simplify right side
    1,188,161.82x = 1,113,149,667,027.66
  5. Step 5: Solve for x
    x = 1,113,149,667,027.66/1,188,161.82
  6. Step 6: Final answer
    x = 936,867.06

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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.