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Finding the Fourth Proportional to 668,463.42, 922,481.04 and 381,982.82

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Solution

The fourth proportional to 668,463.42, 922,481.04 and 381,982.82 is: 527,137.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,463.42 : 922,481.04 = 381,982.82 : x
  2. Step 2: Convert to fraction form
    668,463.42/922,481.04 = 381,982.82/x
  3. Step 3: Cross multiply
    668,463.42x = 922,481.04 × 381,982.82
  4. Step 4: Simplify right side
    668,463.42x = 352,371,909,055.73
  5. Step 5: Solve for x
    x = 352,371,909,055.73/668,463.42
  6. Step 6: Final answer
    x = 527,137.16

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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.