Home / 680,467.88-938,984.58-394,007.36

Finding the Fourth Proportional to 680,467.88, 938,984.58 and 394,007.36

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Solution

The fourth proportional to 680,467.88, 938,984.58 and 394,007.36 is: 543,694.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,467.88 : 938,984.58 = 394,007.36 : x
  2. Step 2: Convert to fraction form
    680,467.88/938,984.58 = 394,007.36/x
  3. Step 3: Cross multiply
    680,467.88x = 938,984.58 × 394,007.36
  4. Step 4: Simplify right side
    680,467.88x = 369,966,835,446.51
  5. Step 5: Solve for x
    x = 369,966,835,446.51/680,467.88
  6. Step 6: Final answer
    x = 543,694.78

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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.