Home / 1,188,698.78-1,782,127.20-389,481.50

Finding the Fourth Proportional to 1,188,698.78, 1,782,127.20 and 389,481.50

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Solution

The fourth proportional to 1,188,698.78, 1,782,127.20 and 389,481.50 is: 583,920.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,698.78 : 1,782,127.20 = 389,481.50 : x
  2. Step 2: Convert to fraction form
    1,188,698.78/1,782,127.20 = 389,481.50/x
  3. Step 3: Cross multiply
    1,188,698.78x = 1,782,127.20 × 389,481.50
  4. Step 4: Simplify right side
    1,188,698.78x = 694,105,575,046.80
  5. Step 5: Solve for x
    x = 694,105,575,046.80/1,188,698.78
  6. Step 6: Final answer
    x = 583,920.49

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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.