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Finding the Fourth Proportional to 6,279,986.40, 8,666,540.40 and 3,526,893.60

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Solution

The fourth proportional to 6,279,986.40, 8,666,540.40 and 3,526,893.60 is: 4,867,202.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279,986.40 : 8,666,540.40 = 3,526,893.60 : x
  2. Step 2: Convert to fraction form
    6,279,986.40/8,666,540.40 = 3,526,893.60/x
  3. Step 3: Cross multiply
    6,279,986.40x = 8,666,540.40 × 3,526,893.60
  4. Step 4: Simplify right side
    6,279,986.40x = 30,565,965,870,901.44
  5. Step 5: Solve for x
    x = 30,565,965,870,901.44/6,279,986.40
  6. Step 6: Final answer
    x = 4,867,202.56

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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.