Home / 419,913.39-629,740.89-120,313.70

Finding the Fourth Proportional to 419,913.39, 629,740.89 and 120,313.70

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Solution

The fourth proportional to 419,913.39, 629,740.89 and 120,313.70 is: 180,433.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,913.39 : 629,740.89 = 120,313.70 : x
  2. Step 2: Convert to fraction form
    419,913.39/629,740.89 = 120,313.70/x
  3. Step 3: Cross multiply
    419,913.39x = 629,740.89 × 120,313.70
  4. Step 4: Simplify right side
    419,913.39x = 75,766,453,368.49
  5. Step 5: Solve for x
    x = 75,766,453,368.49/419,913.39
  6. Step 6: Final answer
    x = 180,433.53

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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.