Home / 643,928.68-888,734.82-372,006.82

Finding the Fourth Proportional to 643,928.68, 888,734.82 and 372,006.82

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Solution

The fourth proportional to 643,928.68, 888,734.82 and 372,006.82 is: 513,434.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,928.68 : 888,734.82 = 372,006.82 : x
  2. Step 2: Convert to fraction form
    643,928.68/888,734.82 = 372,006.82/x
  3. Step 3: Cross multiply
    643,928.68x = 888,734.82 × 372,006.82
  4. Step 4: Simplify right side
    643,928.68x = 330,615,414,211.47
  5. Step 5: Solve for x
    x = 330,615,414,211.47/643,928.68
  6. Step 6: Final answer
    x = 513,434.83

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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.