Home / 1,394,121.20-2,086,516.20-1,226,159.60

Finding the Fourth Proportional to 1,394,121.20, 2,086,516.20 and 1,226,159.60

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Solution

The fourth proportional to 1,394,121.20, 2,086,516.20 and 1,226,159.60 is: 1,835,135.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394,121.20 : 2,086,516.20 = 1,226,159.60 : x
  2. Step 2: Convert to fraction form
    1,394,121.20/2,086,516.20 = 1,226,159.60/x
  3. Step 3: Cross multiply
    1,394,121.20x = 2,086,516.20 × 1,226,159.60
  4. Step 4: Simplify right side
    1,394,121.20x = 2,558,401,869,185.52
  5. Step 5: Solve for x
    x = 2,558,401,869,185.52/1,394,121.20
  6. Step 6: Final answer
    x = 1,835,135.90

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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.