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Finding the Fourth Proportional to 640,007.46, 959,245.74 and 284,619.96

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Solution

The fourth proportional to 640,007.46, 959,245.74 and 284,619.96 is: 426,589.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,007.46 : 959,245.74 = 284,619.96 : x
  2. Step 2: Convert to fraction form
    640,007.46/959,245.74 = 284,619.96/x
  3. Step 3: Cross multiply
    640,007.46x = 959,245.74 × 284,619.96
  4. Step 4: Simplify right side
    640,007.46x = 273,020,484,148.97
  5. Step 5: Solve for x
    x = 273,020,484,148.97/640,007.46
  6. Step 6: Final answer
    x = 426,589.53

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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.