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Finding the Fourth Proportional to 455,843.52, 629,122.80 and 274,649.76

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Solution

The fourth proportional to 455,843.52, 629,122.80 and 274,649.76 is: 379,052.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,843.52 : 629,122.80 = 274,649.76 : x
  2. Step 2: Convert to fraction form
    455,843.52/629,122.80 = 274,649.76/x
  3. Step 3: Cross multiply
    455,843.52x = 629,122.80 × 274,649.76
  4. Step 4: Simplify right side
    455,843.52x = 172,788,426,030.53
  5. Step 5: Solve for x
    x = 172,788,426,030.53/455,843.52
  6. Step 6: Final answer
    x = 379,052.06

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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.