Home / 419,890.95-629,646.89-120,302.96

Finding the Fourth Proportional to 419,890.95, 629,646.89 and 120,302.96

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Solution

The fourth proportional to 419,890.95, 629,646.89 and 120,302.96 is: 180,400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,890.95 : 629,646.89 = 120,302.96 : x
  2. Step 2: Convert to fraction form
    419,890.95/629,646.89 = 120,302.96/x
  3. Step 3: Cross multiply
    419,890.95x = 629,646.89 × 120,302.96
  4. Step 4: Simplify right side
    419,890.95x = 75,748,380,872.05
  5. Step 5: Solve for x
    x = 75,748,380,872.05/419,890.95
  6. Step 6: Final answer
    x = 180,400.13

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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.