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Finding the Fourth Proportional to 641,726.50, 885,815.85 and 373,454.50

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Solution

The fourth proportional to 641,726.50, 885,815.85 and 373,454.50 is: 515,502.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,726.50 : 885,815.85 = 373,454.50 : x
  2. Step 2: Convert to fraction form
    641,726.50/885,815.85 = 373,454.50/x
  3. Step 3: Cross multiply
    641,726.50x = 885,815.85 × 373,454.50
  4. Step 4: Simplify right side
    641,726.50x = 330,811,915,353.83
  5. Step 5: Solve for x
    x = 330,811,915,353.83/641,726.50
  6. Step 6: Final answer
    x = 515,502.97

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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.