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Finding the Fourth Proportional to 425,190.29, 637,786.24 and 399,208.73

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Solution

The fourth proportional to 425,190.29, 637,786.24 and 399,208.73 is: 598,813.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,190.29 : 637,786.24 = 399,208.73 : x
  2. Step 2: Convert to fraction form
    425,190.29/637,786.24 = 399,208.73/x
  3. Step 3: Cross multiply
    425,190.29x = 637,786.24 × 399,208.73
  4. Step 4: Simplify right side
    425,190.29x = 254,609,834,881.88
  5. Step 5: Solve for x
    x = 254,609,834,881.88/425,190.29
  6. Step 6: Final answer
    x = 598,813.85

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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.