Home / 538,871.81-743,617.67-309,269.61

Finding the Fourth Proportional to 538,871.81, 743,617.67 and 309,269.61

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Solution

The fourth proportional to 538,871.81, 743,617.67 and 309,269.61 is: 426,777.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,871.81 : 743,617.67 = 309,269.61 : x
  2. Step 2: Convert to fraction form
    538,871.81/743,617.67 = 309,269.61/x
  3. Step 3: Cross multiply
    538,871.81x = 743,617.67 × 309,269.61
  4. Step 4: Simplify right side
    538,871.81x = 229,978,345,243.66
  5. Step 5: Solve for x
    x = 229,978,345,243.66/538,871.81
  6. Step 6: Final answer
    x = 426,777.47

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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.