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Finding the Fourth Proportional to 869,618.80, 1,304,428.20 and 806,633.20

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Solution

The fourth proportional to 869,618.80, 1,304,428.20 and 806,633.20 is: 1,209,949.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,618.80 : 1,304,428.20 = 806,633.20 : x
  2. Step 2: Convert to fraction form
    869,618.80/1,304,428.20 = 806,633.20/x
  3. Step 3: Cross multiply
    869,618.80x = 1,304,428.20 × 806,633.20
  4. Step 4: Simplify right side
    869,618.80x = 1,052,195,093,136.24
  5. Step 5: Solve for x
    x = 1,052,195,093,136.24/869,618.80
  6. Step 6: Final answer
    x = 1,209,949.80

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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.