Home / 419,928.16-629,706.94-120,340.75

Finding the Fourth Proportional to 419,928.16, 629,706.94 and 120,340.75

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Solution

The fourth proportional to 419,928.16, 629,706.94 and 120,340.75 is: 180,458.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,928.16 : 629,706.94 = 120,340.75 : x
  2. Step 2: Convert to fraction form
    419,928.16/629,706.94 = 120,340.75/x
  3. Step 3: Cross multiply
    419,928.16x = 629,706.94 × 120,340.75
  4. Step 4: Simplify right side
    419,928.16x = 75,779,404,838.10
  5. Step 5: Solve for x
    x = 75,779,404,838.10/419,928.16
  6. Step 6: Final answer
    x = 180,458.02

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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.