Home / 764,614.94-1,055,172.72-420,473.06

Finding the Fourth Proportional to 764,614.94, 1,055,172.72 and 420,473.06

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Solution

The fourth proportional to 764,614.94, 1,055,172.72 and 420,473.06 is: 580,255.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,614.94 : 1,055,172.72 = 420,473.06 : x
  2. Step 2: Convert to fraction form
    764,614.94/1,055,172.72 = 420,473.06/x
  3. Step 3: Cross multiply
    764,614.94x = 1,055,172.72 × 420,473.06
  4. Step 4: Simplify right side
    764,614.94x = 443,671,702,406.92
  5. Step 5: Solve for x
    x = 443,671,702,406.92/764,614.94
  6. Step 6: Final answer
    x = 580,255.08

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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.