Home / 1,213,205.60-1,821,120.60-764,433.20

Finding the Fourth Proportional to 1,213,205.60, 1,821,120.60 and 764,433.20

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Solution

The fourth proportional to 1,213,205.60, 1,821,120.60 and 764,433.20 is: 1,147,476.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,205.60 : 1,821,120.60 = 764,433.20 : x
  2. Step 2: Convert to fraction form
    1,213,205.60/1,821,120.60 = 764,433.20/x
  3. Step 3: Cross multiply
    1,213,205.60x = 1,821,120.60 × 764,433.20
  4. Step 4: Simplify right side
    1,213,205.60x = 1,392,125,047,843.92
  5. Step 5: Solve for x
    x = 1,392,125,047,843.92/1,213,205.60
  6. Step 6: Final answer
    x = 1,147,476.61

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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.