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Finding the Fourth Proportional to 605,881.80, 908,385.30 and 339,723.90

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Solution

The fourth proportional to 605,881.80, 908,385.30 and 339,723.90 is: 509,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,881.80 : 908,385.30 = 339,723.90 : x
  2. Step 2: Convert to fraction form
    605,881.80/908,385.30 = 339,723.90/x
  3. Step 3: Cross multiply
    605,881.80x = 908,385.30 × 339,723.90
  4. Step 4: Simplify right side
    605,881.80x = 308,600,196,818.67
  5. Step 5: Solve for x
    x = 308,600,196,818.67/605,881.80
  6. Step 6: Final answer
    x = 509,340.60

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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.