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Finding the Fourth Proportional to 418,333.50, 629,776.44 and 381,132.63

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Solution

The fourth proportional to 418,333.50, 629,776.44 and 381,132.63 is: 573,772.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,333.50 : 629,776.44 = 381,132.63 : x
  2. Step 2: Convert to fraction form
    418,333.50/629,776.44 = 381,132.63/x
  3. Step 3: Cross multiply
    418,333.50x = 629,776.44 × 381,132.63
  4. Step 4: Simplify right side
    418,333.50x = 240,028,350,889.24
  5. Step 5: Solve for x
    x = 240,028,350,889.24/418,333.50
  6. Step 6: Final answer
    x = 573,772.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.