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Finding the Fourth Proportional to 609,640.62, 841,317.57 and 347,990.58

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Solution

The fourth proportional to 609,640.62, 841,317.57 and 347,990.58 is: 480,234.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,640.62 : 841,317.57 = 347,990.58 : x
  2. Step 2: Convert to fraction form
    609,640.62/841,317.57 = 347,990.58/x
  3. Step 3: Cross multiply
    609,640.62x = 841,317.57 × 347,990.58
  4. Step 4: Simplify right side
    609,640.62x = 292,770,589,148.49
  5. Step 5: Solve for x
    x = 292,770,589,148.49/609,640.62
  6. Step 6: Final answer
    x = 480,234.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.