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Finding the Fourth Proportional to 3,866,616.80, 5,801,998.80 and 1,622,981.60

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Solution

The fourth proportional to 3,866,616.80, 5,801,998.80 and 1,622,981.60 is: 2,435,342.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866,616.80 : 5,801,998.80 = 1,622,981.60 : x
  2. Step 2: Convert to fraction form
    3,866,616.80/5,801,998.80 = 1,622,981.60/x
  3. Step 3: Cross multiply
    3,866,616.80x = 5,801,998.80 × 1,622,981.60
  4. Step 4: Simplify right side
    3,866,616.80x = 9,416,537,295,622.08
  5. Step 5: Solve for x
    x = 9,416,537,295,622.08/3,866,616.80
  6. Step 6: Final answer
    x = 2,435,342.78

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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.