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Finding the Fourth Proportional to 8,982,745.20, 13,474,117.80 and 7,388,422.20

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Solution

The fourth proportional to 8,982,745.20, 13,474,117.80 and 7,388,422.20 is: 11,082,633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,982,745.20 : 13,474,117.80 = 7,388,422.20 : x
  2. Step 2: Convert to fraction form
    8,982,745.20/13,474,117.80 = 7,388,422.20/x
  3. Step 3: Cross multiply
    8,982,745.20x = 13,474,117.80 × 7,388,422.20
  4. Step 4: Simplify right side
    8,982,745.20x = 99,552,471,078,935.17
  5. Step 5: Solve for x
    x = 99,552,471,078,935.17/8,982,745.20
  6. Step 6: Final answer
    x = 11,082,633.30

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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.