Home / 8,259,689.78-12,389,778.88-3,942,194.87

Finding the Fourth Proportional to 8,259,689.78, 12,389,778.88 and 3,942,194.87

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Solution

The fourth proportional to 8,259,689.78, 12,389,778.88 and 3,942,194.87 is: 5,913,408.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259,689.78 : 12,389,778.88 = 3,942,194.87 : x
  2. Step 2: Convert to fraction form
    8,259,689.78/12,389,778.88 = 3,942,194.87/x
  3. Step 3: Cross multiply
    8,259,689.78x = 12,389,778.88 × 3,942,194.87
  4. Step 4: Simplify right side
    8,259,689.78x = 48,842,922,784,464.15
  5. Step 5: Solve for x
    x = 48,842,922,784,464.15/8,259,689.78
  6. Step 6: Final answer
    x = 5,913,408.87

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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.