Home / 764,710.60-1,147,940.70-449,345.20

Finding the Fourth Proportional to 764,710.60, 1,147,940.70 and 449,345.20

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Solution

The fourth proportional to 764,710.60, 1,147,940.70 and 449,345.20 is: 674,531.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,710.60 : 1,147,940.70 = 449,345.20 : x
  2. Step 2: Convert to fraction form
    764,710.60/1,147,940.70 = 449,345.20/x
  3. Step 3: Cross multiply
    764,710.60x = 1,147,940.70 × 449,345.20
  4. Step 4: Simplify right side
    764,710.60x = 515,821,643,429.64
  5. Step 5: Solve for x
    x = 515,821,643,429.64/764,710.60
  6. Step 6: Final answer
    x = 674,531.83

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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.