Home / 727,839.80-1,091,759.70-408,975.20

Finding the Fourth Proportional to 727,839.80, 1,091,759.70 and 408,975.20

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Solution

The fourth proportional to 727,839.80, 1,091,759.70 and 408,975.20 is: 613,462.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,839.80 : 1,091,759.70 = 408,975.20 : x
  2. Step 2: Convert to fraction form
    727,839.80/1,091,759.70 = 408,975.20/x
  3. Step 3: Cross multiply
    727,839.80x = 1,091,759.70 × 408,975.20
  4. Step 4: Simplify right side
    727,839.80x = 446,502,641,659.44
  5. Step 5: Solve for x
    x = 446,502,641,659.44/727,839.80
  6. Step 6: Final answer
    x = 613,462.80

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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.