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Finding the Fourth Proportional to 12,481,775.20, 18,722,662.80 and 3,507,848.80

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Solution

The fourth proportional to 12,481,775.20, 18,722,662.80 and 3,507,848.80 is: 5,261,773.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481,775.20 : 18,722,662.80 = 3,507,848.80 : x
  2. Step 2: Convert to fraction form
    12,481,775.20/18,722,662.80 = 3,507,848.80/x
  3. Step 3: Cross multiply
    12,481,775.20x = 18,722,662.80 × 3,507,848.80
  4. Step 4: Simplify right side
    12,481,775.20x = 65,676,270,235,784.64
  5. Step 5: Solve for x
    x = 65,676,270,235,784.64/12,481,775.20
  6. Step 6: Final answer
    x = 5,261,773.20

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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.