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Finding the Fourth Proportional to 638,007.60, 956,934.60 and 263,991.60

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Solution

The fourth proportional to 638,007.60, 956,934.60 and 263,991.60 is: 395,955.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,007.60 : 956,934.60 = 263,991.60 : x
  2. Step 2: Convert to fraction form
    638,007.60/956,934.60 = 263,991.60/x
  3. Step 3: Cross multiply
    638,007.60x = 956,934.60 × 263,991.60
  4. Step 4: Simplify right side
    638,007.60x = 252,622,696,149.36
  5. Step 5: Solve for x
    x = 252,622,696,149.36/638,007.60
  6. Step 6: Final answer
    x = 395,955.62

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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.