Home / 764,627.82-1,055,212.92-420,477.86

Finding the Fourth Proportional to 764,627.82, 1,055,212.92 and 420,477.86

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Solution

The fourth proportional to 764,627.82, 1,055,212.92 and 420,477.86 is: 580,274.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,627.82 : 1,055,212.92 = 420,477.86 : x
  2. Step 2: Convert to fraction form
    764,627.82/1,055,212.92 = 420,477.86/x
  3. Step 3: Cross multiply
    764,627.82x = 1,055,212.92 × 420,477.86
  4. Step 4: Simplify right side
    764,627.82x = 443,693,670,445.95
  5. Step 5: Solve for x
    x = 443,693,670,445.95/764,627.82
  6. Step 6: Final answer
    x = 580,274.04

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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.