Home / 439,162.19-605,709.38-378,012.41

Finding the Fourth Proportional to 439,162.19, 605,709.38 and 378,012.41

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Solution

The fourth proportional to 439,162.19, 605,709.38 and 378,012.41 is: 521,369.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,162.19 : 605,709.38 = 378,012.41 : x
  2. Step 2: Convert to fraction form
    439,162.19/605,709.38 = 378,012.41/x
  3. Step 3: Cross multiply
    439,162.19x = 605,709.38 × 378,012.41
  4. Step 4: Simplify right side
    439,162.19x = 228,965,660,603.34
  5. Step 5: Solve for x
    x = 228,965,660,603.34/439,162.19
  6. Step 6: Final answer
    x = 521,369.25

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1.5x scale

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.