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Finding the Fourth Proportional to 7,222,751.80, 10,830,978.09 and 2,731,878.52

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Solution

The fourth proportional to 7,222,751.80, 10,830,978.09 and 2,731,878.52 is: 4,096,626.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222,751.80 : 10,830,978.09 = 2,731,878.52 : x
  2. Step 2: Convert to fraction form
    7,222,751.80/10,830,978.09 = 2,731,878.52/x
  3. Step 3: Cross multiply
    7,222,751.80x = 10,830,978.09 × 2,731,878.52
  4. Step 4: Simplify right side
    7,222,751.80x = 29,588,916,394,661.62
  5. Step 5: Solve for x
    x = 29,588,916,394,661.62/7,222,751.80
  6. Step 6: Final answer
    x = 4,096,626.50

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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.