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Finding the Fourth Proportional to 667,007.52, 920,470.18 and 361,083.68

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Solution

The fourth proportional to 667,007.52, 920,470.18 and 361,083.68 is: 498,295.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,007.52 : 920,470.18 = 361,083.68 : x
  2. Step 2: Convert to fraction form
    667,007.52/920,470.18 = 361,083.68/x
  3. Step 3: Cross multiply
    667,007.52x = 920,470.18 × 361,083.68
  4. Step 4: Simplify right side
    667,007.52x = 332,366,756,283.18
  5. Step 5: Solve for x
    x = 332,366,756,283.18/667,007.52
  6. Step 6: Final answer
    x = 498,295.37

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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.