Home / 642,759.30-886,945.14-356,273.24

Finding the Fourth Proportional to 642,759.30, 886,945.14 and 356,273.24

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Solution

The fourth proportional to 642,759.30, 886,945.14 and 356,273.24 is: 491,622.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,759.30 : 886,945.14 = 356,273.24 : x
  2. Step 2: Convert to fraction form
    642,759.30/886,945.14 = 356,273.24/x
  3. Step 3: Cross multiply
    642,759.30x = 886,945.14 × 356,273.24
  4. Step 4: Simplify right side
    642,759.30x = 315,994,814,295.33
  5. Step 5: Solve for x
    x = 315,994,814,295.33/642,759.30
  6. Step 6: Final answer
    x = 491,622.31

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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.