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Finding the Fourth Proportional to 869,806.80, 1,304,710.20 and 550,942.20

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Solution

The fourth proportional to 869,806.80, 1,304,710.20 and 550,942.20 is: 826,413.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,806.80 : 1,304,710.20 = 550,942.20 : x
  2. Step 2: Convert to fraction form
    869,806.80/1,304,710.20 = 550,942.20/x
  3. Step 3: Cross multiply
    869,806.80x = 1,304,710.20 × 550,942.20
  4. Step 4: Simplify right side
    869,806.80x = 718,819,907,950.44
  5. Step 5: Solve for x
    x = 718,819,907,950.44/869,806.80
  6. Step 6: Final answer
    x = 826,413.30

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Similar ratio
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1.5x scale

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.