Home / 428,848.43-643,295.74-113,296.73

Finding the Fourth Proportional to 428,848.43, 643,295.74 and 113,296.73

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Solution

The fourth proportional to 428,848.43, 643,295.74 and 113,296.73 is: 169,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,848.43 : 643,295.74 = 113,296.73 : x
  2. Step 2: Convert to fraction form
    428,848.43/643,295.74 = 113,296.73/x
  3. Step 3: Cross multiply
    428,848.43x = 643,295.74 × 113,296.73
  4. Step 4: Simplify right side
    428,848.43x = 72,883,305,089.93
  5. Step 5: Solve for x
    x = 72,883,305,089.93/428,848.43
  6. Step 6: Final answer
    x = 169,951.20

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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.