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Finding the Fourth Proportional to 641,807.22, 885,476.34 and 369,866.55

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Solution

The fourth proportional to 641,807.22, 885,476.34 and 369,866.55 is: 510,290.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,807.22 : 885,476.34 = 369,866.55 : x
  2. Step 2: Convert to fraction form
    641,807.22/885,476.34 = 369,866.55/x
  3. Step 3: Cross multiply
    641,807.22x = 885,476.34 × 369,866.55
  4. Step 4: Simplify right side
    641,807.22x = 327,508,078,982.43
  5. Step 5: Solve for x
    x = 327,508,078,982.43/641,807.22
  6. Step 6: Final answer
    x = 510,290.42

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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.