Home / 515,579.48-711,951.66-322,317.56

Finding the Fourth Proportional to 515,579.48, 711,951.66 and 322,317.56

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Solution

The fourth proportional to 515,579.48, 711,951.66 and 322,317.56 is: 445,080.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,579.48 : 711,951.66 = 322,317.56 : x
  2. Step 2: Convert to fraction form
    515,579.48/711,951.66 = 322,317.56/x
  3. Step 3: Cross multiply
    515,579.48x = 711,951.66 × 322,317.56
  4. Step 4: Simplify right side
    515,579.48x = 229,474,521,889.15
  5. Step 5: Solve for x
    x = 229,474,521,889.15/515,579.48
  6. Step 6: Final answer
    x = 445,080.79

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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.