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Finding the Fourth Proportional to 640,792.96, 961,335.24 and 341,115.64

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Solution

The fourth proportional to 640,792.96, 961,335.24 and 341,115.64 is: 511,751.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,792.96 : 961,335.24 = 341,115.64 : x
  2. Step 2: Convert to fraction form
    640,792.96/961,335.24 = 341,115.64/x
  3. Step 3: Cross multiply
    640,792.96x = 961,335.24 × 341,115.64
  4. Step 4: Simplify right side
    640,792.96x = 327,926,481,964.63
  5. Step 5: Solve for x
    x = 327,926,481,964.63/640,792.96
  6. Step 6: Final answer
    x = 511,751.07

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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.