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Finding the Fourth Proportional to 666,535.71, 919,819.89 and 364,729.71

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Solution

The fourth proportional to 666,535.71, 919,819.89 and 364,729.71 is: 503,327.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,535.71 : 919,819.89 = 364,729.71 : x
  2. Step 2: Convert to fraction form
    666,535.71/919,819.89 = 364,729.71/x
  3. Step 3: Cross multiply
    666,535.71x = 919,819.89 × 364,729.71
  4. Step 4: Simplify right side
    666,535.71x = 335,485,641,731.93
  5. Step 5: Solve for x
    x = 335,485,641,731.93/666,535.71
  6. Step 6: Final answer
    x = 503,327.33

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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.