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Finding the Fourth Proportional to 1,830,172.56, 2,744,921.64 and 764,928.72

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Solution

The fourth proportional to 1,830,172.56, 2,744,921.64 and 764,928.72 is: 1,147,252.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830,172.56 : 2,744,921.64 = 764,928.72 : x
  2. Step 2: Convert to fraction form
    1,830,172.56/2,744,921.64 = 764,928.72/x
  3. Step 3: Cross multiply
    1,830,172.56x = 2,744,921.64 × 764,928.72
  4. Step 4: Simplify right side
    1,830,172.56x = 2,099,669,396,585.50
  5. Step 5: Solve for x
    x = 2,099,669,396,585.50/1,830,172.56
  6. Step 6: Final answer
    x = 1,147,252.15

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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.