Home / 678,619.36-936,536.92-376,815.52

Finding the Fourth Proportional to 678,619.36, 936,536.92 and 376,815.52

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Solution

The fourth proportional to 678,619.36, 936,536.92 and 376,815.52 is: 520,028.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,619.36 : 936,536.92 = 376,815.52 : x
  2. Step 2: Convert to fraction form
    678,619.36/936,536.92 = 376,815.52/x
  3. Step 3: Cross multiply
    678,619.36x = 936,536.92 × 376,815.52
  4. Step 4: Simplify right side
    678,619.36x = 352,901,646,509.00
  5. Step 5: Solve for x
    x = 352,901,646,509.00/678,619.36
  6. Step 6: Final answer
    x = 520,028.85

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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.