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Finding the Fourth Proportional to 2,655,843.70, 3,984,749.70 and 858,785.80

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Solution

The fourth proportional to 2,655,843.70, 3,984,749.70 and 858,785.80 is: 1,288,496.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655,843.70 : 3,984,749.70 = 858,785.80 : x
  2. Step 2: Convert to fraction form
    2,655,843.70/3,984,749.70 = 858,785.80/x
  3. Step 3: Cross multiply
    2,655,843.70x = 3,984,749.70 × 858,785.80
  4. Step 4: Simplify right side
    2,655,843.70x = 3,422,046,458,914.26
  5. Step 5: Solve for x
    x = 3,422,046,458,914.26/2,655,843.70
  6. Step 6: Final answer
    x = 1,288,496.93

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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.