Home / 919,729.86-1,268,141.58-629,481.48

Finding the Fourth Proportional to 919,729.86, 1,268,141.58 and 629,481.48

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Solution

The fourth proportional to 919,729.86, 1,268,141.58 and 629,481.48 is: 867,941.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,729.86 : 1,268,141.58 = 629,481.48 : x
  2. Step 2: Convert to fraction form
    919,729.86/1,268,141.58 = 629,481.48/x
  3. Step 3: Cross multiply
    919,729.86x = 1,268,141.58 × 629,481.48
  4. Step 4: Simplify right side
    919,729.86x = 798,271,638,627.94
  5. Step 5: Solve for x
    x = 798,271,638,627.94/919,729.86
  6. Step 6: Final answer
    x = 867,941.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.