Home / 3,615,107.86-5,422,638.38-919,409.78

Finding the Fourth Proportional to 3,615,107.86, 5,422,638.38 and 919,409.78

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Solution

The fourth proportional to 3,615,107.86, 5,422,638.38 and 919,409.78 is: 1,379,108.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615,107.86 : 5,422,638.38 = 919,409.78 : x
  2. Step 2: Convert to fraction form
    3,615,107.86/5,422,638.38 = 919,409.78/x
  3. Step 3: Cross multiply
    3,615,107.86x = 5,422,638.38 × 919,409.78
  4. Step 4: Simplify right side
    3,615,107.86x = 4,985,626,728,265.12
  5. Step 5: Solve for x
    x = 4,985,626,728,265.12/3,615,107.86
  6. Step 6: Final answer
    x = 1,379,108.71

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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.