Home / 420,014.34-629,962.52-120,520.44

Finding the Fourth Proportional to 420,014.34, 629,962.52 and 120,520.44

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Solution

The fourth proportional to 420,014.34, 629,962.52 and 120,520.44 is: 180,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,014.34 : 629,962.52 = 120,520.44 : x
  2. Step 2: Convert to fraction form
    420,014.34/629,962.52 = 120,520.44/x
  3. Step 3: Cross multiply
    420,014.34x = 629,962.52 × 120,520.44
  4. Step 4: Simplify right side
    420,014.34x = 75,923,359,491.31
  5. Step 5: Solve for x
    x = 75,923,359,491.31/420,014.34
  6. Step 6: Final answer
    x = 180,763.73

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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.