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Finding the Fourth Proportional to 8,304,311.80, 12,456,467.70 and 7,985,447.20

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Solution

The fourth proportional to 8,304,311.80, 12,456,467.70 and 7,985,447.20 is: 11,978,170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,304,311.80 : 12,456,467.70 = 7,985,447.20 : x
  2. Step 2: Convert to fraction form
    8,304,311.80/12,456,467.70 = 7,985,447.20/x
  3. Step 3: Cross multiply
    8,304,311.80x = 12,456,467.70 × 7,985,447.20
  4. Step 4: Simplify right side
    8,304,311.80x = 99,470,465,116,855.44
  5. Step 5: Solve for x
    x = 99,470,465,116,855.44/8,304,311.80
  6. Step 6: Final answer
    x = 11,978,170.80

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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.