Home / 764,896.20-1,147,672.35-390,919.20

Finding the Fourth Proportional to 764,896.20, 1,147,672.35 and 390,919.20

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Solution

The fourth proportional to 764,896.20, 1,147,672.35 and 390,919.20 is: 586,546.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,896.20 : 1,147,672.35 = 390,919.20 : x
  2. Step 2: Convert to fraction form
    764,896.20/1,147,672.35 = 390,919.20/x
  3. Step 3: Cross multiply
    764,896.20x = 1,147,672.35 × 390,919.20
  4. Step 4: Simplify right side
    764,896.20x = 448,647,156,924.12
  5. Step 5: Solve for x
    x = 448,647,156,924.12/764,896.20
  6. Step 6: Final answer
    x = 586,546.46

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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.