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Finding the Fourth Proportional to 7,889,908.80, 11,839,528.80 and 2,840,563.20

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Solution

The fourth proportional to 7,889,908.80, 11,839,528.80 and 2,840,563.20 is: 4,262,524.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,889,908.80 : 11,839,528.80 = 2,840,563.20 : x
  2. Step 2: Convert to fraction form
    7,889,908.80/11,839,528.80 = 2,840,563.20/x
  3. Step 3: Cross multiply
    7,889,908.80x = 11,839,528.80 × 2,840,563.20
  4. Step 4: Simplify right side
    7,889,908.80x = 33,630,929,814,620.16
  5. Step 5: Solve for x
    x = 33,630,929,814,620.16/7,889,908.80
  6. Step 6: Final answer
    x = 4,262,524.53

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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.