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Finding the Fourth Proportional to 609,124.20, 840,309.84 and 394,333.80

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Solution

The fourth proportional to 609,124.20, 840,309.84 and 394,333.80 is: 543,998.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,124.20 : 840,309.84 = 394,333.80 : x
  2. Step 2: Convert to fraction form
    609,124.20/840,309.84 = 394,333.80/x
  3. Step 3: Cross multiply
    609,124.20x = 840,309.84 × 394,333.80
  4. Step 4: Simplify right side
    609,124.20x = 331,362,572,384.59
  5. Step 5: Solve for x
    x = 331,362,572,384.59/609,124.20
  6. Step 6: Final answer
    x = 543,998.37

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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.