Home / 911,378.92-1,367,106.24-312,751.72

Finding the Fourth Proportional to 911,378.92, 1,367,106.24 and 312,751.72

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Solution

The fourth proportional to 911,378.92, 1,367,106.24 and 312,751.72 is: 469,140.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,378.92 : 1,367,106.24 = 312,751.72 : x
  2. Step 2: Convert to fraction form
    911,378.92/1,367,106.24 = 312,751.72/x
  3. Step 3: Cross multiply
    911,378.92x = 1,367,106.24 × 312,751.72
  4. Step 4: Simplify right side
    911,378.92x = 427,564,827,982.73
  5. Step 5: Solve for x
    x = 427,564,827,982.73/911,378.92
  6. Step 6: Final answer
    x = 469,140.57

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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.