Home / 764,449.47-1,054,940.94-420,291.27

Finding the Fourth Proportional to 764,449.47, 1,054,940.94 and 420,291.27

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Solution

The fourth proportional to 764,449.47, 1,054,940.94 and 420,291.27 is: 580,002.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,449.47 : 1,054,940.94 = 420,291.27 : x
  2. Step 2: Convert to fraction form
    764,449.47/1,054,940.94 = 420,291.27/x
  3. Step 3: Cross multiply
    764,449.47x = 1,054,940.94 × 420,291.27
  4. Step 4: Simplify right side
    764,449.47x = 443,382,467,447.59
  5. Step 5: Solve for x
    x = 443,382,467,447.59/764,449.47
  6. Step 6: Final answer
    x = 580,002.32

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1.5x scale

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.