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Finding the Fourth Proportional to 502,787.88, 693,847.28 and 276,433.38

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Solution

The fourth proportional to 502,787.88, 693,847.28 and 276,433.38 is: 381,478.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,787.88 : 693,847.28 = 276,433.38 : x
  2. Step 2: Convert to fraction form
    502,787.88/693,847.28 = 276,433.38/x
  3. Step 3: Cross multiply
    502,787.88x = 693,847.28 × 276,433.38
  4. Step 4: Simplify right side
    502,787.88x = 191,802,550,290.53
  5. Step 5: Solve for x
    x = 191,802,550,290.53/502,787.88
  6. Step 6: Final answer
    x = 381,478.07

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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.