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Finding the Fourth Proportional to 555,049.41, 765,968.20 and 300,400.60

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Solution

The fourth proportional to 555,049.41, 765,968.20 and 300,400.60 is: 414,552.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,049.41 : 765,968.20 = 300,400.60 : x
  2. Step 2: Convert to fraction form
    555,049.41/765,968.20 = 300,400.60/x
  3. Step 3: Cross multiply
    555,049.41x = 765,968.20 × 300,400.60
  4. Step 4: Simplify right side
    555,049.41x = 230,097,305,631.19
  5. Step 5: Solve for x
    x = 230,097,305,631.19/555,049.41
  6. Step 6: Final answer
    x = 414,552.83

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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.