Home / 428,849.43-643,297.24-113,297.73

Finding the Fourth Proportional to 428,849.43, 643,297.24 and 113,297.73

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Solution

The fourth proportional to 428,849.43, 643,297.24 and 113,297.73 is: 169,952.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,849.43 : 643,297.24 = 113,297.73 : x
  2. Step 2: Convert to fraction form
    428,849.43/643,297.24 = 113,297.73/x
  3. Step 3: Cross multiply
    428,849.43x = 643,297.24 × 113,297.73
  4. Step 4: Simplify right side
    428,849.43x = 72,884,117,007.27
  5. Step 5: Solve for x
    x = 72,884,117,007.27/428,849.43
  6. Step 6: Final answer
    x = 169,952.70

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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.