Home / 764,618.58-1,055,200.59-420,480.66

Finding the Fourth Proportional to 764,618.58, 1,055,200.59 and 420,480.66

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Solution

The fourth proportional to 764,618.58, 1,055,200.59 and 420,480.66 is: 580,278.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,618.58 : 1,055,200.59 = 420,480.66 : x
  2. Step 2: Convert to fraction form
    764,618.58/1,055,200.59 = 420,480.66/x
  3. Step 3: Cross multiply
    764,618.58x = 1,055,200.59 × 420,480.66
  4. Step 4: Simplify right side
    764,618.58x = 443,691,440,515.59
  5. Step 5: Solve for x
    x = 443,691,440,515.59/764,618.58
  6. Step 6: Final answer
    x = 580,278.13

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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.