Home / 419,980.20-629,972.81-104,437.11

Finding the Fourth Proportional to 419,980.20, 629,972.81 and 104,437.11

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Solution

The fourth proportional to 419,980.20, 629,972.81 and 104,437.11 is: 156,656.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,980.20 : 629,972.81 = 104,437.11 : x
  2. Step 2: Convert to fraction form
    419,980.20/629,972.81 = 104,437.11/x
  3. Step 3: Cross multiply
    419,980.20x = 629,972.81 × 104,437.11
  4. Step 4: Simplify right side
    419,980.20x = 65,792,536,571.44
  5. Step 5: Solve for x
    x = 65,792,536,571.44/419,980.20
  6. Step 6: Final answer
    x = 156,656.28

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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.