Home / 764,542.26-1,055,095.38-420,404.40

Finding the Fourth Proportional to 764,542.26, 1,055,095.38 and 420,404.40

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Solution

The fourth proportional to 764,542.26, 1,055,095.38 and 420,404.40 is: 580,172.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,542.26 : 1,055,095.38 = 420,404.40 : x
  2. Step 2: Convert to fraction form
    764,542.26/1,055,095.38 = 420,404.40/x
  3. Step 3: Cross multiply
    764,542.26x = 1,055,095.38 × 420,404.40
  4. Step 4: Simplify right side
    764,542.26x = 443,566,740,171.67
  5. Step 5: Solve for x
    x = 443,566,740,171.67/764,542.26
  6. Step 6: Final answer
    x = 580,172.95

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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.