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Finding the Fourth Proportional to 7,927,620.80, 11,891,431.20 and 2,247,771.20

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Solution

The fourth proportional to 7,927,620.80, 11,891,431.20 and 2,247,771.20 is: 3,371,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,927,620.80 : 11,891,431.20 = 2,247,771.20 : x
  2. Step 2: Convert to fraction form
    7,927,620.80/11,891,431.20 = 2,247,771.20/x
  3. Step 3: Cross multiply
    7,927,620.80x = 11,891,431.20 × 2,247,771.20
  4. Step 4: Simplify right side
    7,927,620.80x = 26,729,216,578,141.44
  5. Step 5: Solve for x
    x = 26,729,216,578,141.44/7,927,620.80
  6. Step 6: Final answer
    x = 3,371,656.80

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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.