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Finding the Fourth Proportional to 641,728.20, 885,677.57 and 369,743.97

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Solution

The fourth proportional to 641,728.20, 885,677.57 and 369,743.97 is: 510,300.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,728.20 : 885,677.57 = 369,743.97 : x
  2. Step 2: Convert to fraction form
    641,728.20/885,677.57 = 369,743.97/x
  3. Step 3: Cross multiply
    641,728.20x = 885,677.57 × 369,743.97
  4. Step 4: Simplify right side
    641,728.20x = 327,473,940,871.75
  5. Step 5: Solve for x
    x = 327,473,940,871.75/641,728.20
  6. Step 6: Final answer
    x = 510,300.06

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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.