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Finding the Fourth Proportional to 1,147,947.20, 1,719,847.20 and 982,059.20

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Solution

The fourth proportional to 1,147,947.20, 1,719,847.20 and 982,059.20 is: 1,471,314.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,947.20 : 1,719,847.20 = 982,059.20 : x
  2. Step 2: Convert to fraction form
    1,147,947.20/1,719,847.20 = 982,059.20/x
  3. Step 3: Cross multiply
    1,147,947.20x = 1,719,847.20 × 982,059.20
  4. Step 4: Simplify right side
    1,147,947.20x = 1,688,991,765,354.24
  5. Step 5: Solve for x
    x = 1,688,991,765,354.24/1,147,947.20
  6. Step 6: Final answer
    x = 1,471,314.85

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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.