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Finding the Fourth Proportional to 641,757.20, 885,717.59 and 369,772.97

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Solution

The fourth proportional to 641,757.20, 885,717.59 and 369,772.97 is: 510,340.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,757.20 : 885,717.59 = 369,772.97 : x
  2. Step 2: Convert to fraction form
    641,757.20/885,717.59 = 369,772.97/x
  3. Step 3: Cross multiply
    641,757.20x = 885,717.59 × 369,772.97
  4. Step 4: Simplify right side
    641,757.20x = 327,514,417,558.09
  5. Step 5: Solve for x
    x = 327,514,417,558.09/641,757.20
  6. Step 6: Final answer
    x = 510,340.08

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Double scale
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1.5x scale

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.