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Finding the Fourth Proportional to 641,568.78, 885,287.24 and 369,725.76

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Solution

The fourth proportional to 641,568.78, 885,287.24 and 369,725.76 is: 510,176.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,568.78 : 885,287.24 = 369,725.76 : x
  2. Step 2: Convert to fraction form
    641,568.78/885,287.24 = 369,725.76/x
  3. Step 3: Cross multiply
    641,568.78x = 885,287.24 × 369,725.76
  4. Step 4: Simplify right side
    641,568.78x = 327,313,497,627.30
  5. Step 5: Solve for x
    x = 327,313,497,627.30/641,568.78
  6. Step 6: Final answer
    x = 510,176.79

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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.