Home / 820,942.80-1,229,081.40-727,630.80

Finding the Fourth Proportional to 820,942.80, 1,229,081.40 and 727,630.80

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Solution

The fourth proportional to 820,942.80, 1,229,081.40 and 727,630.80 is: 1,089,378.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,942.80 : 1,229,081.40 = 727,630.80 : x
  2. Step 2: Convert to fraction form
    820,942.80/1,229,081.40 = 727,630.80/x
  3. Step 3: Cross multiply
    820,942.80x = 1,229,081.40 × 727,630.80
  4. Step 4: Simplify right side
    820,942.80x = 894,317,482,347.12
  5. Step 5: Solve for x
    x = 894,317,482,347.12/820,942.80
  6. Step 6: Final answer
    x = 1,089,378.56

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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.