Home / 764,081.20-1,146,121.80-386,167.60

Finding the Fourth Proportional to 764,081.20, 1,146,121.80 and 386,167.60

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Solution

The fourth proportional to 764,081.20, 1,146,121.80 and 386,167.60 is: 579,251.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,081.20 : 1,146,121.80 = 386,167.60 : x
  2. Step 2: Convert to fraction form
    764,081.20/1,146,121.80 = 386,167.60/x
  3. Step 3: Cross multiply
    764,081.20x = 1,146,121.80 × 386,167.60
  4. Step 4: Simplify right side
    764,081.20x = 442,595,104,813.68
  5. Step 5: Solve for x
    x = 442,595,104,813.68/764,081.20
  6. Step 6: Final answer
    x = 579,251.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.