Home / 3,489,940.80-5,235,256.80-1,215,115.20

Finding the Fourth Proportional to 3,489,940.80, 5,235,256.80 and 1,215,115.20

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Solution

The fourth proportional to 3,489,940.80, 5,235,256.80 and 1,215,115.20 is: 1,822,793.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489,940.80 : 5,235,256.80 = 1,215,115.20 : x
  2. Step 2: Convert to fraction form
    3,489,940.80/5,235,256.80 = 1,215,115.20/x
  3. Step 3: Cross multiply
    3,489,940.80x = 5,235,256.80 × 1,215,115.20
  4. Step 4: Simplify right side
    3,489,940.80x = 6,361,440,113,583.36
  5. Step 5: Solve for x
    x = 6,361,440,113,583.36/3,489,940.80
  6. Step 6: Final answer
    x = 1,822,793.13

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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.