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Finding the Fourth Proportional to 538,339.05, 807,509.79 and 505,456.29

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Solution

The fourth proportional to 538,339.05, 807,509.79 and 505,456.29 is: 758,185.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,339.05 : 807,509.79 = 505,456.29 : x
  2. Step 2: Convert to fraction form
    538,339.05/807,509.79 = 505,456.29/x
  3. Step 3: Cross multiply
    538,339.05x = 807,509.79 × 505,456.29
  4. Step 4: Simplify right side
    538,339.05x = 408,160,902,592.08
  5. Step 5: Solve for x
    x = 408,160,902,592.08/538,339.05
  6. Step 6: Final answer
    x = 758,185.58

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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.