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Finding the Fourth Proportional to 668,377.20, 922,118.19 and 439,057.97

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Solution

The fourth proportional to 668,377.20, 922,118.19 and 439,057.97 is: 605,740.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,377.20 : 922,118.19 = 439,057.97 : x
  2. Step 2: Convert to fraction form
    668,377.20/922,118.19 = 439,057.97/x
  3. Step 3: Cross multiply
    668,377.20x = 922,118.19 × 439,057.97
  4. Step 4: Simplify right side
    668,377.20x = 404,863,335,990.88
  5. Step 5: Solve for x
    x = 404,863,335,990.88/668,377.20
  6. Step 6: Final answer
    x = 605,740.79

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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.