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Finding the Fourth Proportional to 911,892.33, 1,367,866.13 and 312,844.82

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Solution

The fourth proportional to 911,892.33, 1,367,866.13 and 312,844.82 is: 469,276.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,892.33 : 1,367,866.13 = 312,844.82 : x
  2. Step 2: Convert to fraction form
    911,892.33/1,367,866.13 = 312,844.82/x
  3. Step 3: Cross multiply
    911,892.33x = 1,367,866.13 × 312,844.82
  4. Step 4: Simplify right side
    911,892.33x = 427,929,824,820.39
  5. Step 5: Solve for x
    x = 427,929,824,820.39/911,892.33
  6. Step 6: Final answer
    x = 469,276.70

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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.