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Finding the Fourth Proportional to 640,169.94, 883,359.22 and 353,672.94

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Solution

The fourth proportional to 640,169.94, 883,359.22 and 353,672.94 is: 488,027.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,169.94 : 883,359.22 = 353,672.94 : x
  2. Step 2: Convert to fraction form
    640,169.94/883,359.22 = 353,672.94/x
  3. Step 3: Cross multiply
    640,169.94x = 883,359.22 × 353,672.94
  4. Step 4: Simplify right side
    640,169.94x = 312,420,252,413.51
  5. Step 5: Solve for x
    x = 312,420,252,413.51/640,169.94
  6. Step 6: Final answer
    x = 488,027.06

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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.