Home / 8,312,138.40-12,447,212.40-5,456,791.20

Finding the Fourth Proportional to 8,312,138.40, 12,447,212.40 and 5,456,791.20

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Solution

The fourth proportional to 8,312,138.40, 12,447,212.40 and 5,456,791.20 is: 8,171,403.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,312,138.40 : 12,447,212.40 = 5,456,791.20 : x
  2. Step 2: Convert to fraction form
    8,312,138.40/12,447,212.40 = 5,456,791.20/x
  3. Step 3: Cross multiply
    8,312,138.40x = 12,447,212.40 × 5,456,791.20
  4. Step 4: Simplify right side
    8,312,138.40x = 67,921,839,088,850.88
  5. Step 5: Solve for x
    x = 67,921,839,088,850.88/8,312,138.40
  6. Step 6: Final answer
    x = 8,171,403.77

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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.