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Finding the Fourth Proportional to 641,405.52, 885,233.04 and 369,420.48

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Solution

The fourth proportional to 641,405.52, 885,233.04 and 369,420.48 is: 509,854.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,405.52 : 885,233.04 = 369,420.48 : x
  2. Step 2: Convert to fraction form
    641,405.52/885,233.04 = 369,420.48/x
  3. Step 3: Cross multiply
    641,405.52x = 885,233.04 × 369,420.48
  4. Step 4: Simplify right side
    641,405.52x = 327,023,214,548.66
  5. Step 5: Solve for x
    x = 327,023,214,548.66/641,405.52
  6. Step 6: Final answer
    x = 509,854.07

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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.