Home / 1,188,878.10-1,783,452.47-431,076.48

Finding the Fourth Proportional to 1,188,878.10, 1,783,452.47 and 431,076.48

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Solution

The fourth proportional to 1,188,878.10, 1,783,452.47 and 431,076.48 is: 646,663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,878.10 : 1,783,452.47 = 431,076.48 : x
  2. Step 2: Convert to fraction form
    1,188,878.10/1,783,452.47 = 431,076.48/x
  3. Step 3: Cross multiply
    1,188,878.10x = 1,783,452.47 × 431,076.48
  4. Step 4: Simplify right side
    1,188,878.10x = 768,804,410,859.52
  5. Step 5: Solve for x
    x = 768,804,410,859.52/1,188,878.10
  6. Step 6: Final answer
    x = 646,663.78

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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.