Home / 911,348.69-1,367,216.81-312,148.97

Finding the Fourth Proportional to 911,348.69, 1,367,216.81 and 312,148.97

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Solution

The fourth proportional to 911,348.69, 1,367,216.81 and 312,148.97 is: 468,289.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,348.69 : 1,367,216.81 = 312,148.97 : x
  2. Step 2: Convert to fraction form
    911,348.69/1,367,216.81 = 312,148.97/x
  3. Step 3: Cross multiply
    911,348.69x = 1,367,216.81 × 312,148.97
  4. Step 4: Simplify right side
    911,348.69x = 426,775,310,611.36
  5. Step 5: Solve for x
    x = 426,775,310,611.36/911,348.69
  6. Step 6: Final answer
    x = 468,289.82

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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.