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Finding the Fourth Proportional to 605,599.20, 908,836.20 and 339,076.80

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Solution

The fourth proportional to 605,599.20, 908,836.20 and 339,076.80 is: 508,860.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,599.20 : 908,836.20 = 339,076.80 : x
  2. Step 2: Convert to fraction form
    605,599.20/908,836.20 = 339,076.80/x
  3. Step 3: Cross multiply
    605,599.20x = 908,836.20 × 339,076.80
  4. Step 4: Simplify right side
    605,599.20x = 308,165,270,420.16
  5. Step 5: Solve for x
    x = 308,165,270,420.16/605,599.20
  6. Step 6: Final answer
    x = 508,860.10

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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.