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Finding the Fourth Proportional to 695,589.58, 959,896.31 and 389,663.94

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Solution

The fourth proportional to 695,589.58, 959,896.31 and 389,663.94 is: 537,726.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,589.58 : 959,896.31 = 389,663.94 : x
  2. Step 2: Convert to fraction form
    695,589.58/959,896.31 = 389,663.94/x
  3. Step 3: Cross multiply
    695,589.58x = 959,896.31 × 389,663.94
  4. Step 4: Simplify right side
    695,589.58x = 374,036,978,146.06
  5. Step 5: Solve for x
    x = 374,036,978,146.06/695,589.58
  6. Step 6: Final answer
    x = 537,726.54

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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.