Home / 538,076.26-742,480.23-308,621.66

Finding the Fourth Proportional to 538,076.26, 742,480.23 and 308,621.66

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Solution

The fourth proportional to 538,076.26, 742,480.23 and 308,621.66 is: 425,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,076.26 : 742,480.23 = 308,621.66 : x
  2. Step 2: Convert to fraction form
    538,076.26/742,480.23 = 308,621.66/x
  3. Step 3: Cross multiply
    538,076.26x = 742,480.23 × 308,621.66
  4. Step 4: Simplify right side
    538,076.26x = 229,145,481,099.78
  5. Step 5: Solve for x
    x = 229,145,481,099.78/538,076.26
  6. Step 6: Final answer
    x = 425,860.60

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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.