Home / 764,893.19-1,055,578.52-420,754.71

Finding the Fourth Proportional to 764,893.19, 1,055,578.52 and 420,754.71

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Solution

The fourth proportional to 764,893.19, 1,055,578.52 and 420,754.71 is: 580,655.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,893.19 : 1,055,578.52 = 420,754.71 : x
  2. Step 2: Convert to fraction form
    764,893.19/1,055,578.52 = 420,754.71/x
  3. Step 3: Cross multiply
    764,893.19x = 1,055,578.52 × 420,754.71
  4. Step 4: Simplify right side
    764,893.19x = 444,139,639,075.14
  5. Step 5: Solve for x
    x = 444,139,639,075.14/764,893.19
  6. Step 6: Final answer
    x = 580,655.76

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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.