Home / 419,637.20-629,455.80-262,043.60

Finding the Fourth Proportional to 419,637.20, 629,455.80 and 262,043.60

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Solution

The fourth proportional to 419,637.20, 629,455.80 and 262,043.60 is: 393,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,637.20 : 629,455.80 = 262,043.60 : x
  2. Step 2: Convert to fraction form
    419,637.20/629,455.80 = 262,043.60/x
  3. Step 3: Cross multiply
    419,637.20x = 629,455.80 × 262,043.60
  4. Step 4: Simplify right side
    419,637.20x = 164,944,863,872.88
  5. Step 5: Solve for x
    x = 164,944,863,872.88/419,637.20
  6. Step 6: Final answer
    x = 393,065.40

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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.