Home / 764,542.44-1,055,095.64-420,404.56

Finding the Fourth Proportional to 764,542.44, 1,055,095.64 and 420,404.56

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Solution

The fourth proportional to 764,542.44, 1,055,095.64 and 420,404.56 is: 580,173.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,542.44 : 1,055,095.64 = 420,404.56 : x
  2. Step 2: Convert to fraction form
    764,542.44/1,055,095.64 = 420,404.56/x
  3. Step 3: Cross multiply
    764,542.44x = 1,055,095.64 × 420,404.56
  4. Step 4: Simplify right side
    764,542.44x = 443,567,018,292.12
  5. Step 5: Solve for x
    x = 443,567,018,292.12/764,542.44
  6. Step 6: Final answer
    x = 580,173.18

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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.