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Finding the Fourth Proportional to 668,342, 922,311.96 and 366,536

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Solution

The fourth proportional to 668,342, 922,311.96 and 366,536 is: 505,819.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,342 : 922,311.96 = 366,536 : x
  2. Step 2: Convert to fraction form
    668,342/922,311.96 = 366,536/x
  3. Step 3: Cross multiply
    668,342x = 922,311.96 × 366,536
  4. Step 4: Simplify right side
    668,342x = 338,060,536,570.56
  5. Step 5: Solve for x
    x = 338,060,536,570.56/668,342
  6. Step 6: Final answer
    x = 505,819.68

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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.