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Finding the Fourth Proportional to 1,789,719.40, 2,469,813.18 and 984,903.40

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Solution

The fourth proportional to 1,789,719.40, 2,469,813.18 and 984,903.40 is: 1,359,166.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789,719.40 : 2,469,813.18 = 984,903.40 : x
  2. Step 2: Convert to fraction form
    1,789,719.40/2,469,813.18 = 984,903.40/x
  3. Step 3: Cross multiply
    1,789,719.40x = 2,469,813.18 × 984,903.40
  4. Step 4: Simplify right side
    1,789,719.40x = 2,432,527,398,346.81
  5. Step 5: Solve for x
    x = 2,432,527,398,346.81/1,789,719.40
  6. Step 6: Final answer
    x = 1,359,166.92

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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.