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Finding the Fourth Proportional to 668,942.64, 923,141.41 and 363,019

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Solution

The fourth proportional to 668,942.64, 923,141.41 and 363,019 is: 500,966.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,942.64 : 923,141.41 = 363,019 : x
  2. Step 2: Convert to fraction form
    668,942.64/923,141.41 = 363,019/x
  3. Step 3: Cross multiply
    668,942.64x = 923,141.41 × 363,019
  4. Step 4: Simplify right side
    668,942.64x = 335,117,871,516.79
  5. Step 5: Solve for x
    x = 335,117,871,516.79/668,942.64
  6. Step 6: Final answer
    x = 500,966.53

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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.