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Finding the Fourth Proportional to 539,163.45, 807,147.74 and 399,548.73

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Solution

The fourth proportional to 539,163.45, 807,147.74 and 399,548.73 is: 598,139.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,163.45 : 807,147.74 = 399,548.73 : x
  2. Step 2: Convert to fraction form
    539,163.45/807,147.74 = 399,548.73/x
  3. Step 3: Cross multiply
    539,163.45x = 807,147.74 × 399,548.73
  4. Step 4: Simplify right side
    539,163.45x = 322,494,852,441.63
  5. Step 5: Solve for x
    x = 322,494,852,441.63/539,163.45
  6. Step 6: Final answer
    x = 598,139.31

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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.