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Finding the Fourth Proportional to 7,202,992.80, 10,800,795.60 and 2,153,647.20

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Solution

The fourth proportional to 7,202,992.80, 10,800,795.60 and 2,153,647.20 is: 3,229,366.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,202,992.80 : 10,800,795.60 = 2,153,647.20 : x
  2. Step 2: Convert to fraction form
    7,202,992.80/10,800,795.60 = 2,153,647.20/x
  3. Step 3: Cross multiply
    7,202,992.80x = 10,800,795.60 × 2,153,647.20
  4. Step 4: Simplify right side
    7,202,992.80x = 23,261,103,201,712.32
  5. Step 5: Solve for x
    x = 23,261,103,201,712.32/7,202,992.80
  6. Step 6: Final answer
    x = 3,229,366.44

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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.