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Finding the Fourth Proportional to 579,646.60, 869,729.10 and 205,937.80

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Solution

The fourth proportional to 579,646.60, 869,729.10 and 205,937.80 is: 308,998.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,646.60 : 869,729.10 = 205,937.80 : x
  2. Step 2: Convert to fraction form
    579,646.60/869,729.10 = 205,937.80/x
  3. Step 3: Cross multiply
    579,646.60x = 869,729.10 × 205,937.80
  4. Step 4: Simplify right side
    579,646.60x = 179,110,097,449.98
  5. Step 5: Solve for x
    x = 179,110,097,449.98/579,646.60
  6. Step 6: Final answer
    x = 308,998.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.