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Finding the Fourth Proportional to 8,978,821.12, 13,468,231.68 and 3,296,586.88

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Solution

The fourth proportional to 8,978,821.12, 13,468,231.68 and 3,296,586.88 is: 4,944,880.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978,821.12 : 13,468,231.68 = 3,296,586.88 : x
  2. Step 2: Convert to fraction form
    8,978,821.12/13,468,231.68 = 3,296,586.88/x
  3. Step 3: Cross multiply
    8,978,821.12x = 13,468,231.68 × 3,296,586.88
  4. Step 4: Simplify right side
    8,978,821.12x = 44,399,195,853,088.36
  5. Step 5: Solve for x
    x = 44,399,195,853,088.36/8,978,821.12
  6. Step 6: Final answer
    x = 4,944,880.32

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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.