Home / 764,755.37-1,055,340.11-420,590.94

Finding the Fourth Proportional to 764,755.37, 1,055,340.11 and 420,590.94

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Solution

The fourth proportional to 764,755.37, 1,055,340.11 and 420,590.94 is: 580,403.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,755.37 : 1,055,340.11 = 420,590.94 : x
  2. Step 2: Convert to fraction form
    764,755.37/1,055,340.11 = 420,590.94/x
  3. Step 3: Cross multiply
    764,755.37x = 1,055,340.11 × 420,590.94
  4. Step 4: Simplify right side
    764,755.37x = 443,866,488,884.60
  5. Step 5: Solve for x
    x = 443,866,488,884.60/764,755.37
  6. Step 6: Final answer
    x = 580,403.23

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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.