Home / 764,756.24-1,055,340.83-420,591.69

Finding the Fourth Proportional to 764,756.24, 1,055,340.83 and 420,591.69

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Solution

The fourth proportional to 764,756.24, 1,055,340.83 and 420,591.69 is: 580,404.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,756.24 : 1,055,340.83 = 420,591.69 : x
  2. Step 2: Convert to fraction form
    764,756.24/1,055,340.83 = 420,591.69/x
  3. Step 3: Cross multiply
    764,756.24x = 1,055,340.83 × 420,591.69
  4. Step 4: Simplify right side
    764,756.24x = 443,867,584,267.18
  5. Step 5: Solve for x
    x = 443,867,584,267.18/764,756.24
  6. Step 6: Final answer
    x = 580,404.01

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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.