Home / 538,474.60-742,964.44-305,849.79

Finding the Fourth Proportional to 538,474.60, 742,964.44 and 305,849.79

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Solution

The fourth proportional to 538,474.60, 742,964.44 and 305,849.79 is: 421,998.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,474.60 : 742,964.44 = 305,849.79 : x
  2. Step 2: Convert to fraction form
    538,474.60/742,964.44 = 305,849.79/x
  3. Step 3: Cross multiply
    538,474.60x = 742,964.44 × 305,849.79
  4. Step 4: Simplify right side
    538,474.60x = 227,235,514,195.83
  5. Step 5: Solve for x
    x = 227,235,514,195.83/538,474.60
  6. Step 6: Final answer
    x = 421,998.58

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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.