Home / 428,604.14-642,861.09-175,911.32

Finding the Fourth Proportional to 428,604.14, 642,861.09 and 175,911.32

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Solution

The fourth proportional to 428,604.14, 642,861.09 and 175,911.32 is: 263,848.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,604.14 : 642,861.09 = 175,911.32 : x
  2. Step 2: Convert to fraction form
    428,604.14/642,861.09 = 175,911.32/x
  3. Step 3: Cross multiply
    428,604.14x = 642,861.09 × 175,911.32
  4. Step 4: Simplify right side
    428,604.14x = 113,086,544,525.69
  5. Step 5: Solve for x
    x = 113,086,544,525.69/428,604.14
  6. Step 6: Final answer
    x = 263,848.46

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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.