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Finding the Fourth Proportional to 638,930.52, 881,726.58 and 352,446.48

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Solution

The fourth proportional to 638,930.52, 881,726.58 and 352,446.48 is: 486,377.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,930.52 : 881,726.58 = 352,446.48 : x
  2. Step 2: Convert to fraction form
    638,930.52/881,726.58 = 352,446.48/x
  3. Step 3: Cross multiply
    638,930.52x = 881,726.58 × 352,446.48
  4. Step 4: Simplify right side
    638,930.52x = 310,761,429,443.44
  5. Step 5: Solve for x
    x = 310,761,429,443.44/638,930.52
  6. Step 6: Final answer
    x = 486,377.50

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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.