Home / 1,293,198.78-1,939,798.20-394,645.20

Finding the Fourth Proportional to 1,293,198.78, 1,939,798.20 and 394,645.20

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Solution

The fourth proportional to 1,293,198.78, 1,939,798.20 and 394,645.20 is: 591,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,198.78 : 1,939,798.20 = 394,645.20 : x
  2. Step 2: Convert to fraction form
    1,293,198.78/1,939,798.20 = 394,645.20/x
  3. Step 3: Cross multiply
    1,293,198.78x = 1,939,798.20 × 394,645.20
  4. Step 4: Simplify right side
    1,293,198.78x = 765,532,048,598.64
  5. Step 5: Solve for x
    x = 765,532,048,598.64/1,293,198.78
  6. Step 6: Final answer
    x = 591,967.81

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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.