Home / 7,128,975.65-9,839,245.97-4,188,792.15

Finding the Fourth Proportional to 7,128,975.65, 9,839,245.97 and 4,188,792.15

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Solution

The fourth proportional to 7,128,975.65, 9,839,245.97 and 4,188,792.15 is: 5,781,273.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,975.65 : 9,839,245.97 = 4,188,792.15 : x
  2. Step 2: Convert to fraction form
    7,128,975.65/9,839,245.97 = 4,188,792.15/x
  3. Step 3: Cross multiply
    7,128,975.65x = 9,839,245.97 × 4,188,792.15
  4. Step 4: Simplify right side
    7,128,975.65x = 41,214,556,316,250.89
  5. Step 5: Solve for x
    x = 41,214,556,316,250.89/7,128,975.65
  6. Step 6: Final answer
    x = 5,781,273.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.