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Finding the Fourth Proportional to 605,890.80, 908,398.80 and 339,732.90

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Solution

The fourth proportional to 605,890.80, 908,398.80 and 339,732.90 is: 509,354.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,890.80 : 908,398.80 = 339,732.90 : x
  2. Step 2: Convert to fraction form
    605,890.80/908,398.80 = 339,732.90/x
  3. Step 3: Cross multiply
    605,890.80x = 908,398.80 × 339,732.90
  4. Step 4: Simplify right side
    605,890.80x = 308,612,958,680.52
  5. Step 5: Solve for x
    x = 308,612,958,680.52/605,890.80
  6. Step 6: Final answer
    x = 509,354.09

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1.5x scale

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.