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Finding the Fourth Proportional to 866,998.20, 1,300,497.30 and 762,022.20

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Solution

The fourth proportional to 866,998.20, 1,300,497.30 and 762,022.20 is: 1,143,033.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,998.20 : 1,300,497.30 = 762,022.20 : x
  2. Step 2: Convert to fraction form
    866,998.20/1,300,497.30 = 762,022.20/x
  3. Step 3: Cross multiply
    866,998.20x = 1,300,497.30 × 762,022.20
  4. Step 4: Simplify right side
    866,998.20x = 991,007,813,640.06
  5. Step 5: Solve for x
    x = 991,007,813,640.06/866,998.20
  6. Step 6: Final answer
    x = 1,143,033.30

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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.