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Finding the Fourth Proportional to 2,786,660.82, 4,179,954.02 and 764,905.07

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Solution

The fourth proportional to 2,786,660.82, 4,179,954.02 and 764,905.07 is: 1,147,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786,660.82 : 4,179,954.02 = 764,905.07 : x
  2. Step 2: Convert to fraction form
    2,786,660.82/4,179,954.02 = 764,905.07/x
  3. Step 3: Cross multiply
    2,786,660.82x = 4,179,954.02 × 764,905.07
  4. Step 4: Simplify right side
    2,786,660.82x = 3,197,268,033,192.83
  5. Step 5: Solve for x
    x = 3,197,268,033,192.83/2,786,660.82
  6. Step 6: Final answer
    x = 1,147,347.40

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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.