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Finding the Fourth Proportional to 640,844.91, 961,412.76 and 341,167.59

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Solution

The fourth proportional to 640,844.91, 961,412.76 and 341,167.59 is: 511,828.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,844.91 : 961,412.76 = 341,167.59 : x
  2. Step 2: Convert to fraction form
    640,844.91/961,412.76 = 341,167.59/x
  3. Step 3: Cross multiply
    640,844.91x = 961,412.76 × 341,167.59
  4. Step 4: Simplify right side
    640,844.91x = 328,002,874,324.45
  5. Step 5: Solve for x
    x = 328,002,874,324.45/640,844.91
  6. Step 6: Final answer
    x = 511,828.79

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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.