Home / 538,054.14-742,459.78-331,289.70

Finding the Fourth Proportional to 538,054.14, 742,459.78 and 331,289.70

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Solution

The fourth proportional to 538,054.14, 742,459.78 and 331,289.70 is: 457,145.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,054.14 : 742,459.78 = 331,289.70 : x
  2. Step 2: Convert to fraction form
    538,054.14/742,459.78 = 331,289.70/x
  3. Step 3: Cross multiply
    538,054.14x = 742,459.78 × 331,289.70
  4. Step 4: Simplify right side
    538,054.14x = 245,969,277,778.27
  5. Step 5: Solve for x
    x = 245,969,277,778.27/538,054.14
  6. Step 6: Final answer
    x = 457,145.96

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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.