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Finding the Fourth Proportional to 640,755.84, 961,529.04 and 325,439.04

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Solution

The fourth proportional to 640,755.84, 961,529.04 and 325,439.04 is: 488,359.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,755.84 : 961,529.04 = 325,439.04 : x
  2. Step 2: Convert to fraction form
    640,755.84/961,529.04 = 325,439.04/x
  3. Step 3: Cross multiply
    640,755.84x = 961,529.04 × 325,439.04
  4. Step 4: Simplify right side
    640,755.84x = 312,919,087,709.72
  5. Step 5: Solve for x
    x = 312,919,087,709.72/640,755.84
  6. Step 6: Final answer
    x = 488,359.32

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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.