Home / 485,930.96-727,963.32-285,828.56

Finding the Fourth Proportional to 485,930.96, 727,963.32 and 285,828.56

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Solution

The fourth proportional to 485,930.96, 727,963.32 and 285,828.56 is: 428,193.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,930.96 : 727,963.32 = 285,828.56 : x
  2. Step 2: Convert to fraction form
    485,930.96/727,963.32 = 285,828.56/x
  3. Step 3: Cross multiply
    485,930.96x = 727,963.32 × 285,828.56
  4. Step 4: Simplify right side
    485,930.96x = 208,072,707,488.42
  5. Step 5: Solve for x
    x = 208,072,707,488.42/485,930.96
  6. Step 6: Final answer
    x = 428,193.97

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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.