Home / 419,748.40-629,776.20-170,455.60

Finding the Fourth Proportional to 419,748.40, 629,776.20 and 170,455.60

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Solution

The fourth proportional to 419,748.40, 629,776.20 and 170,455.60 is: 255,745.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,748.40 : 629,776.20 = 170,455.60 : x
  2. Step 2: Convert to fraction form
    419,748.40/629,776.20 = 170,455.60/x
  3. Step 3: Cross multiply
    419,748.40x = 629,776.20 × 170,455.60
  4. Step 4: Simplify right side
    419,748.40x = 107,348,880,036.72
  5. Step 5: Solve for x
    x = 107,348,880,036.72/419,748.40
  6. Step 6: Final answer
    x = 255,745.78

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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.