Home / 1,311,054.40-1,965,922.96-764,122.88

Finding the Fourth Proportional to 1,311,054.40, 1,965,922.96 and 764,122.88

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Solution

The fourth proportional to 1,311,054.40, 1,965,922.96 and 764,122.88 is: 1,145,800.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,054.40 : 1,965,922.96 = 764,122.88 : x
  2. Step 2: Convert to fraction form
    1,311,054.40/1,965,922.96 = 764,122.88/x
  3. Step 3: Cross multiply
    1,311,054.40x = 1,965,922.96 × 764,122.88
  4. Step 4: Simplify right side
    1,311,054.40x = 1,502,206,714,053.32
  5. Step 5: Solve for x
    x = 1,502,206,714,053.32/1,311,054.40
  6. Step 6: Final answer
    x = 1,145,800.44

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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.