Home / 1,121,287.20-1,682,152.32-411,321.36

Finding the Fourth Proportional to 1,121,287.20, 1,682,152.32 and 411,321.36

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Solution

The fourth proportional to 1,121,287.20, 1,682,152.32 and 411,321.36 is: 617,063.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,287.20 : 1,682,152.32 = 411,321.36 : x
  2. Step 2: Convert to fraction form
    1,121,287.20/1,682,152.32 = 411,321.36/x
  3. Step 3: Cross multiply
    1,121,287.20x = 1,682,152.32 × 411,321.36
  4. Step 4: Simplify right side
    1,121,287.20x = 691,905,179,989.56
  5. Step 5: Solve for x
    x = 691,905,179,989.56/1,121,287.20
  6. Step 6: Final answer
    x = 617,063.30

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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.