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Finding the Fourth Proportional to 640,759.84, 961,535.04 and 325,443.04

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Solution

The fourth proportional to 640,759.84, 961,535.04 and 325,443.04 is: 488,365.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,759.84 : 961,535.04 = 325,443.04 : x
  2. Step 2: Convert to fraction form
    640,759.84/961,535.04 = 325,443.04/x
  3. Step 3: Cross multiply
    640,759.84x = 961,535.04 × 325,443.04
  4. Step 4: Simplify right side
    640,759.84x = 312,924,886,484.12
  5. Step 5: Solve for x
    x = 312,924,886,484.12/640,759.84
  6. Step 6: Final answer
    x = 488,365.32

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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.