Home / 1,211,629.20-1,672,040.52-667,765.50

Finding the Fourth Proportional to 1,211,629.20, 1,672,040.52 and 667,765.50

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Solution

The fourth proportional to 1,211,629.20, 1,672,040.52 and 667,765.50 is: 921,512.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,629.20 : 1,672,040.52 = 667,765.50 : x
  2. Step 2: Convert to fraction form
    1,211,629.20/1,672,040.52 = 667,765.50/x
  3. Step 3: Cross multiply
    1,211,629.20x = 1,672,040.52 × 667,765.50
  4. Step 4: Simplify right side
    1,211,629.20x = 1,116,530,973,858.06
  5. Step 5: Solve for x
    x = 1,116,530,973,858.06/1,211,629.20
  6. Step 6: Final answer
    x = 921,512.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.