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Finding the Fourth Proportional to 656,299.88, 905,694.37 and 354,493.88

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Solution

The fourth proportional to 656,299.88, 905,694.37 and 354,493.88 is: 489,201.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,299.88 : 905,694.37 = 354,493.88 : x
  2. Step 2: Convert to fraction form
    656,299.88/905,694.37 = 354,493.88/x
  3. Step 3: Cross multiply
    656,299.88x = 905,694.37 × 354,493.88
  4. Step 4: Simplify right side
    656,299.88x = 321,063,105,900.75
  5. Step 5: Solve for x
    x = 321,063,105,900.75/656,299.88
  6. Step 6: Final answer
    x = 489,201.84

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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.