Home / 764,468.55-1,054,874.88-420,247.71

Finding the Fourth Proportional to 764,468.55, 1,054,874.88 and 420,247.71

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Solution

The fourth proportional to 764,468.55, 1,054,874.88 and 420,247.71 is: 579,891.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,468.55 : 1,054,874.88 = 420,247.71 : x
  2. Step 2: Convert to fraction form
    764,468.55/1,054,874.88 = 420,247.71/x
  3. Step 3: Cross multiply
    764,468.55x = 1,054,874.88 × 420,247.71
  4. Step 4: Simplify right side
    764,468.55x = 443,308,752,656.53
  5. Step 5: Solve for x
    x = 443,308,752,656.53/764,468.55
  6. Step 6: Final answer
    x = 579,891.42

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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.