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Finding the Fourth Proportional to 3,878,605.22, 5,809,976.31 and 3,161,502.50

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Solution

The fourth proportional to 3,878,605.22, 5,809,976.31 and 3,161,502.50 is: 4,735,788.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878,605.22 : 5,809,976.31 = 3,161,502.50 : x
  2. Step 2: Convert to fraction form
    3,878,605.22/5,809,976.31 = 3,161,502.50/x
  3. Step 3: Cross multiply
    3,878,605.22x = 5,809,976.31 × 3,161,502.50
  4. Step 4: Simplify right side
    3,878,605.22x = 18,368,254,629,005.77
  5. Step 5: Solve for x
    x = 18,368,254,629,005.77/3,878,605.22
  6. Step 6: Final answer
    x = 4,735,788.66

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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.