Home / 3,208,128.78-4,812,193.17-1,078,212.90

Finding the Fourth Proportional to 3,208,128.78, 4,812,193.17 and 1,078,212.90

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Solution

The fourth proportional to 3,208,128.78, 4,812,193.17 and 1,078,212.90 is: 1,617,319.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208,128.78 : 4,812,193.17 = 1,078,212.90 : x
  2. Step 2: Convert to fraction form
    3,208,128.78/4,812,193.17 = 1,078,212.90/x
  3. Step 3: Cross multiply
    3,208,128.78x = 4,812,193.17 × 1,078,212.90
  4. Step 4: Simplify right side
    3,208,128.78x = 5,188,568,753,185.89
  5. Step 5: Solve for x
    x = 5,188,568,753,185.89/3,208,128.78
  6. Step 6: Final answer
    x = 1,617,319.35

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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.