Home / 911,376.92-1,367,103.24-312,749.72

Finding the Fourth Proportional to 911,376.92, 1,367,103.24 and 312,749.72

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Solution

The fourth proportional to 911,376.92, 1,367,103.24 and 312,749.72 is: 469,137.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,376.92 : 1,367,103.24 = 312,749.72 : x
  2. Step 2: Convert to fraction form
    911,376.92/1,367,103.24 = 312,749.72/x
  3. Step 3: Cross multiply
    911,376.92x = 1,367,103.24 × 312,749.72
  4. Step 4: Simplify right side
    911,376.92x = 427,561,155,521.09
  5. Step 5: Solve for x
    x = 427,561,155,521.09/911,376.92
  6. Step 6: Final answer
    x = 469,137.57

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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.