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Finding the Fourth Proportional to 426,494.39, 639,742.41 and 110,950.79

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Solution

The fourth proportional to 426,494.39, 639,742.41 and 110,950.79 is: 166,426.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,494.39 : 639,742.41 = 110,950.79 : x
  2. Step 2: Convert to fraction form
    426,494.39/639,742.41 = 110,950.79/x
  3. Step 3: Cross multiply
    426,494.39x = 639,742.41 × 110,950.79
  4. Step 4: Simplify right side
    426,494.39x = 70,979,925,786.00
  5. Step 5: Solve for x
    x = 70,979,925,786.00/426,494.39
  6. Step 6: Final answer
    x = 166,426.40

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Similar ratio
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1.5x scale

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.