Home / 419,903,999.80-629,855,999.70-333,172,828.60

Finding the Fourth Proportional to 419,903,999.80, 629,855,999.70 and 333,172,828.60

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Solution

The fourth proportional to 419,903,999.80, 629,855,999.70 and 333,172,828.60 is: 499,759,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,903,999.80 : 629,855,999.70 = 333,172,828.60 : x
  2. Step 2: Convert to fraction form
    419,903,999.80/629,855,999.70 = 333,172,828.60/x
  3. Step 3: Cross multiply
    419,903,999.80x = 629,855,999.70 × 333,172,828.60
  4. Step 4: Simplify right side
    419,903,999.80x = 209,850,905,030,729,792
  5. Step 5: Solve for x
    x = 209,850,905,030,729,792/419,903,999.80
  6. Step 6: Final answer
    x = 499,759,242.90

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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.