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Finding the Fourth Proportional to 419,895.60, 629,843.40 and 413,998.80

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Solution

The fourth proportional to 419,895.60, 629,843.40 and 413,998.80 is: 620,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,895.60 : 629,843.40 = 413,998.80 : x
  2. Step 2: Convert to fraction form
    419,895.60/629,843.40 = 413,998.80/x
  3. Step 3: Cross multiply
    419,895.60x = 629,843.40 × 413,998.80
  4. Step 4: Simplify right side
    419,895.60x = 260,754,411,787.92
  5. Step 5: Solve for x
    x = 260,754,411,787.92/419,895.60
  6. Step 6: Final answer
    x = 620,998.20

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1.5x scale

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.