Home / 631,067,999.70-946,601,999.55-427,224,825.30

Finding the Fourth Proportional to 631,067,999.70, 946,601,999.55 and 427,224,825.30

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Solution

The fourth proportional to 631,067,999.70, 946,601,999.55 and 427,224,825.30 is: 640,837,237.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,067,999.70 : 946,601,999.55 = 427,224,825.30 : x
  2. Step 2: Convert to fraction form
    631,067,999.70/946,601,999.55 = 427,224,825.30/x
  3. Step 3: Cross multiply
    631,067,999.70x = 946,601,999.55 × 427,224,825.30
  4. Step 4: Simplify right side
    631,067,999.70x = 404,411,873,886,379,392
  5. Step 5: Solve for x
    x = 404,411,873,886,379,392/631,067,999.70
  6. Step 6: Final answer
    x = 640,837,237.95

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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.