Home / 419,774.40-629,475.84-120,186.72

Finding the Fourth Proportional to 419,774.40, 629,475.84 and 120,186.72

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Solution

The fourth proportional to 419,774.40, 629,475.84 and 120,186.72 is: 180,226.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,774.40 : 629,475.84 = 120,186.72 : x
  2. Step 2: Convert to fraction form
    419,774.40/629,475.84 = 120,186.72/x
  3. Step 3: Cross multiply
    419,774.40x = 629,475.84 × 120,186.72
  4. Step 4: Simplify right side
    419,774.40x = 75,654,636,528.84
  5. Step 5: Solve for x
    x = 75,654,636,528.84/419,774.40
  6. Step 6: Final answer
    x = 180,226.89

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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.