Home / 12,408,040.80-18,612,644.40-3,888,655.20

Finding the Fourth Proportional to 12,408,040.80, 18,612,644.40 and 3,888,655.20

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Solution

The fourth proportional to 12,408,040.80, 18,612,644.40 and 3,888,655.20 is: 5,833,165.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408,040.80 : 18,612,644.40 = 3,888,655.20 : x
  2. Step 2: Convert to fraction form
    12,408,040.80/18,612,644.40 = 3,888,655.20/x
  3. Step 3: Cross multiply
    12,408,040.80x = 18,612,644.40 × 3,888,655.20
  4. Step 4: Simplify right side
    12,408,040.80x = 72,378,156,431,810.88
  5. Step 5: Solve for x
    x = 72,378,156,431,810.88/12,408,040.80
  6. Step 6: Final answer
    x = 5,833,165.57

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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.