Home / 805,188.60-1,207,928.70-331,921.80

Finding the Fourth Proportional to 805,188.60, 1,207,928.70 and 331,921.80

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Solution

The fourth proportional to 805,188.60, 1,207,928.70 and 331,921.80 is: 497,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,188.60 : 1,207,928.70 = 331,921.80 : x
  2. Step 2: Convert to fraction form
    805,188.60/1,207,928.70 = 331,921.80/x
  3. Step 3: Cross multiply
    805,188.60x = 1,207,928.70 × 331,921.80
  4. Step 4: Simplify right side
    805,188.60x = 400,937,868,375.66
  5. Step 5: Solve for x
    x = 400,937,868,375.66/805,188.60
  6. Step 6: Final answer
    x = 497,942.80

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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.