Home / 1,138,659.40-1,571,383.38-622,441.81

Finding the Fourth Proportional to 1,138,659.40, 1,571,383.38 and 622,441.81

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Solution

The fourth proportional to 1,138,659.40, 1,571,383.38 and 622,441.81 is: 858,987.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,659.40 : 1,571,383.38 = 622,441.81 : x
  2. Step 2: Convert to fraction form
    1,138,659.40/1,571,383.38 = 622,441.81/x
  3. Step 3: Cross multiply
    1,138,659.40x = 1,571,383.38 × 622,441.81
  4. Step 4: Simplify right side
    1,138,659.40x = 978,094,715,251.12
  5. Step 5: Solve for x
    x = 978,094,715,251.12/1,138,659.40
  6. Step 6: Final answer
    x = 858,987.96

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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.