Home / 764,551.44-1,055,108.09-420,413.55

Finding the Fourth Proportional to 764,551.44, 1,055,108.09 and 420,413.55

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Solution

The fourth proportional to 764,551.44, 1,055,108.09 and 420,413.55 is: 580,185.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,551.44 : 1,055,108.09 = 420,413.55 : x
  2. Step 2: Convert to fraction form
    764,551.44/1,055,108.09 = 420,413.55/x
  3. Step 3: Cross multiply
    764,551.44x = 1,055,108.09 × 420,413.55
  4. Step 4: Simplify right side
    764,551.44x = 443,581,735,648.55
  5. Step 5: Solve for x
    x = 443,581,735,648.55/764,551.44
  6. Step 6: Final answer
    x = 580,185.60

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Double scale
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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.