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Finding the Fourth Proportional to 641,644.94, 885,253.11 and 369,705.80

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Solution

The fourth proportional to 641,644.94, 885,253.11 and 369,705.80 is: 510,069.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,644.94 : 885,253.11 = 369,705.80 : x
  2. Step 2: Convert to fraction form
    641,644.94/885,253.11 = 369,705.80/x
  3. Step 3: Cross multiply
    641,644.94x = 885,253.11 × 369,705.80
  4. Step 4: Simplify right side
    641,644.94x = 327,283,209,235.04
  5. Step 5: Solve for x
    x = 327,283,209,235.04/641,644.94
  6. Step 6: Final answer
    x = 510,069.03

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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.