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Finding the Fourth Proportional to 668,963.91, 923,172.68 and 363,040.28

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Solution

The fourth proportional to 668,963.91, 923,172.68 and 363,040.28 is: 500,996.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,963.91 : 923,172.68 = 363,040.28 : x
  2. Step 2: Convert to fraction form
    668,963.91/923,172.68 = 363,040.28/x
  3. Step 3: Cross multiply
    668,963.91x = 923,172.68 × 363,040.28
  4. Step 4: Simplify right side
    668,963.91x = 335,148,864,527.29
  5. Step 5: Solve for x
    x = 335,148,864,527.29/668,963.91
  6. Step 6: Final answer
    x = 500,996.93

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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.