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Finding the Fourth Proportional to 419,914.80, 629,872.20 and 370,051.20

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Solution

The fourth proportional to 419,914.80, 629,872.20 and 370,051.20 is: 555,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,914.80 : 629,872.20 = 370,051.20 : x
  2. Step 2: Convert to fraction form
    419,914.80/629,872.20 = 370,051.20/x
  3. Step 3: Cross multiply
    419,914.80x = 629,872.20 × 370,051.20
  4. Step 4: Simplify right side
    419,914.80x = 233,084,963,456.64
  5. Step 5: Solve for x
    x = 233,084,963,456.64/419,914.80
  6. Step 6: Final answer
    x = 555,076.80

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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.