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Finding the Fourth Proportional to 8,505,808.80, 12,759,879.60 and 2,825,440.80

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Solution

The fourth proportional to 8,505,808.80, 12,759,879.60 and 2,825,440.80 is: 4,238,548.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505,808.80 : 12,759,879.60 = 2,825,440.80 : x
  2. Step 2: Convert to fraction form
    8,505,808.80/12,759,879.60 = 2,825,440.80/x
  3. Step 3: Cross multiply
    8,505,808.80x = 12,759,879.60 × 2,825,440.80
  4. Step 4: Simplify right side
    8,505,808.80x = 36,052,284,424,927.68
  5. Step 5: Solve for x
    x = 36,052,284,424,927.68/8,505,808.80
  6. Step 6: Final answer
    x = 4,238,548.65

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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.