Home / 428,675.52-642,792.96-251,531.76

Finding the Fourth Proportional to 428,675.52, 642,792.96 and 251,531.76

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Solution

The fourth proportional to 428,675.52, 642,792.96 and 251,531.76 is: 377,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,675.52 : 642,792.96 = 251,531.76 : x
  2. Step 2: Convert to fraction form
    428,675.52/642,792.96 = 251,531.76/x
  3. Step 3: Cross multiply
    428,675.52x = 642,792.96 × 251,531.76
  4. Step 4: Simplify right side
    428,675.52x = 161,682,844,544.41
  5. Step 5: Solve for x
    x = 161,682,844,544.41/428,675.52
  6. Step 6: Final answer
    x = 377,168.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.