Home / 414,538.55-620,331.60-287,583.20

Finding the Fourth Proportional to 414,538.55, 620,331.60 and 287,583.20

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Solution

The fourth proportional to 414,538.55, 620,331.60 and 287,583.20 is: 430,350.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,538.55 : 620,331.60 = 287,583.20 : x
  2. Step 2: Convert to fraction form
    414,538.55/620,331.60 = 287,583.20/x
  3. Step 3: Cross multiply
    414,538.55x = 620,331.60 × 287,583.20
  4. Step 4: Simplify right side
    414,538.55x = 178,396,946,589.12
  5. Step 5: Solve for x
    x = 178,396,946,589.12/414,538.55
  6. Step 6: Final answer
    x = 430,350.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.