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Finding the Fourth Proportional to 2,978,161.20, 4,467,241.80 and 1,844,420.40

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Solution

The fourth proportional to 2,978,161.20, 4,467,241.80 and 1,844,420.40 is: 2,766,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978,161.20 : 4,467,241.80 = 1,844,420.40 : x
  2. Step 2: Convert to fraction form
    2,978,161.20/4,467,241.80 = 1,844,420.40/x
  3. Step 3: Cross multiply
    2,978,161.20x = 4,467,241.80 × 1,844,420.40
  4. Step 4: Simplify right side
    2,978,161.20x = 8,239,471,907,652.72
  5. Step 5: Solve for x
    x = 8,239,471,907,652.72/2,978,161.20
  6. Step 6: Final answer
    x = 2,766,630.60

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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.