Home / 764,823.36-1,055,481.80-420,673.80

Finding the Fourth Proportional to 764,823.36, 1,055,481.80 and 420,673.80

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Solution

The fourth proportional to 764,823.36, 1,055,481.80 and 420,673.80 is: 580,543.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,823.36 : 1,055,481.80 = 420,673.80 : x
  2. Step 2: Convert to fraction form
    764,823.36/1,055,481.80 = 420,673.80/x
  3. Step 3: Cross multiply
    764,823.36x = 1,055,481.80 × 420,673.80
  4. Step 4: Simplify right side
    764,823.36x = 444,013,539,636.84
  5. Step 5: Solve for x
    x = 444,013,539,636.84/764,823.36
  6. Step 6: Final answer
    x = 580,543.90

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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.