Home / 764,580.03-1,055,147.50-420,442.05

Finding the Fourth Proportional to 764,580.03, 1,055,147.50 and 420,442.05

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Solution

The fourth proportional to 764,580.03, 1,055,147.50 and 420,442.05 is: 580,224.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,580.03 : 1,055,147.50 = 420,442.05 : x
  2. Step 2: Convert to fraction form
    764,580.03/1,055,147.50 = 420,442.05/x
  3. Step 3: Cross multiply
    764,580.03x = 1,055,147.50 × 420,442.05
  4. Step 4: Simplify right side
    764,580.03x = 443,628,382,434.73
  5. Step 5: Solve for x
    x = 443,628,382,434.73/764,580.03
  6. Step 6: Final answer
    x = 580,224.92

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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.