Home / 764,858.46-1,055,506.79-420,729.65

Finding the Fourth Proportional to 764,858.46, 1,055,506.79 and 420,729.65

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Solution

The fourth proportional to 764,858.46, 1,055,506.79 and 420,729.65 is: 580,608.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,858.46 : 1,055,506.79 = 420,729.65 : x
  2. Step 2: Convert to fraction form
    764,858.46/1,055,506.79 = 420,729.65/x
  3. Step 3: Cross multiply
    764,858.46x = 1,055,506.79 × 420,729.65
  4. Step 4: Simplify right side
    764,858.46x = 444,082,994,948.14
  5. Step 5: Solve for x
    x = 444,082,994,948.14/764,858.46
  6. Step 6: Final answer
    x = 580,608.07

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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.