Home / 426,618.29-639,965.70-111,077.93

Finding the Fourth Proportional to 426,618.29, 639,965.70 and 111,077.93

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Solution

The fourth proportional to 426,618.29, 639,965.70 and 111,077.93 is: 166,626.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,618.29 : 639,965.70 = 111,077.93 : x
  2. Step 2: Convert to fraction form
    426,618.29/639,965.70 = 111,077.93/x
  3. Step 3: Cross multiply
    426,618.29x = 639,965.70 × 111,077.93
  4. Step 4: Simplify right side
    426,618.29x = 71,086,062,027.17
  5. Step 5: Solve for x
    x = 71,086,062,027.17/426,618.29
  6. Step 6: Final answer
    x = 166,626.85

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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.