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Finding the Fourth Proportional to 544,429.38, 816,809.85 and 278,376.78

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Solution

The fourth proportional to 544,429.38, 816,809.85 and 278,376.78 is: 417,649.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,429.38 : 816,809.85 = 278,376.78 : x
  2. Step 2: Convert to fraction form
    544,429.38/816,809.85 = 278,376.78/x
  3. Step 3: Cross multiply
    544,429.38x = 816,809.85 × 278,376.78
  4. Step 4: Simplify right side
    544,429.38x = 227,380,895,915.28
  5. Step 5: Solve for x
    x = 227,380,895,915.28/544,429.38
  6. Step 6: Final answer
    x = 417,649.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.