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Finding the Fourth Proportional to 687,852.44, 949,238.19 and 381,929.39

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Solution

The fourth proportional to 687,852.44, 949,238.19 and 381,929.39 is: 527,063.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,852.44 : 949,238.19 = 381,929.39 : x
  2. Step 2: Convert to fraction form
    687,852.44/949,238.19 = 381,929.39/x
  3. Step 3: Cross multiply
    687,852.44x = 949,238.19 × 381,929.39
  4. Step 4: Simplify right side
    687,852.44x = 362,541,958,125.21
  5. Step 5: Solve for x
    x = 362,541,958,125.21/687,852.44
  6. Step 6: Final answer
    x = 527,063.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.