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Finding the Fourth Proportional to 641,759.13, 885,660.21 and 369,871.29

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Solution

The fourth proportional to 641,759.13, 885,660.21 and 369,871.29 is: 510,441.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,759.13 : 885,660.21 = 369,871.29 : x
  2. Step 2: Convert to fraction form
    641,759.13/885,660.21 = 369,871.29/x
  3. Step 3: Cross multiply
    641,759.13x = 885,660.21 × 369,871.29
  4. Step 4: Simplify right side
    641,759.13x = 327,580,284,374.37
  5. Step 5: Solve for x
    x = 327,580,284,374.37/641,759.13
  6. Step 6: Final answer
    x = 510,441.17

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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.