Home / 8,611,931.68-12,909,025.44-3,821,876.80

Finding the Fourth Proportional to 8,611,931.68, 12,909,025.44 and 3,821,876.80

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Solution

The fourth proportional to 8,611,931.68, 12,909,025.44 and 3,821,876.80 is: 5,728,877.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611,931.68 : 12,909,025.44 = 3,821,876.80 : x
  2. Step 2: Convert to fraction form
    8,611,931.68/12,909,025.44 = 3,821,876.80/x
  3. Step 3: Cross multiply
    8,611,931.68x = 12,909,025.44 × 3,821,876.80
  4. Step 4: Simplify right side
    8,611,931.68x = 49,336,704,839,745.79
  5. Step 5: Solve for x
    x = 49,336,704,839,745.79/8,611,931.68
  6. Step 6: Final answer
    x = 5,728,877.87

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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.