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Finding the Fourth Proportional to 502,776.72, 693,834.48 and 276,436.80

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Solution

The fourth proportional to 502,776.72, 693,834.48 and 276,436.80 is: 381,484.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,776.72 : 693,834.48 = 276,436.80 : x
  2. Step 2: Convert to fraction form
    502,776.72/693,834.48 = 276,436.80/x
  3. Step 3: Cross multiply
    502,776.72x = 693,834.48 × 276,436.80
  4. Step 4: Simplify right side
    502,776.72x = 191,801,383,380.86
  5. Step 5: Solve for x
    x = 191,801,383,380.86/502,776.72
  6. Step 6: Final answer
    x = 381,484.22

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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.