Home / 420,311.21-629,827.25-308,065.86

Finding the Fourth Proportional to 420,311.21, 629,827.25 and 308,065.86

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Solution

The fourth proportional to 420,311.21, 629,827.25 and 308,065.86 is: 461,630.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,311.21 : 629,827.25 = 308,065.86 : x
  2. Step 2: Convert to fraction form
    420,311.21/629,827.25 = 308,065.86/x
  3. Step 3: Cross multiply
    420,311.21x = 629,827.25 × 308,065.86
  4. Step 4: Simplify right side
    420,311.21x = 194,028,271,882.36
  5. Step 5: Solve for x
    x = 194,028,271,882.36/420,311.21
  6. Step 6: Final answer
    x = 461,630.02

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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.