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Finding the Fourth Proportional to 668,785.05, 922,923.30 and 382,311.54

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Solution

The fourth proportional to 668,785.05, 922,923.30 and 382,311.54 is: 527,589.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,785.05 : 922,923.30 = 382,311.54 : x
  2. Step 2: Convert to fraction form
    668,785.05/922,923.30 = 382,311.54/x
  3. Step 3: Cross multiply
    668,785.05x = 922,923.30 × 382,311.54
  4. Step 4: Simplify right side
    668,785.05x = 352,844,228,124.88
  5. Step 5: Solve for x
    x = 352,844,228,124.88/668,785.05
  6. Step 6: Final answer
    x = 527,589.89

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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.