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Finding the Fourth Proportional to 605,887.80, 908,394.30 and 339,729.90

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Solution

The fourth proportional to 605,887.80, 908,394.30 and 339,729.90 is: 509,349.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,887.80 : 908,394.30 = 339,729.90 : x
  2. Step 2: Convert to fraction form
    605,887.80/908,394.30 = 339,729.90/x
  3. Step 3: Cross multiply
    605,887.80x = 908,394.30 × 339,729.90
  4. Step 4: Simplify right side
    605,887.80x = 308,608,704,699.57
  5. Step 5: Solve for x
    x = 308,608,704,699.57/605,887.80
  6. Step 6: Final answer
    x = 509,349.59

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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.