Home / 639,968.90-959,694.15-219,028.10

Finding the Fourth Proportional to 639,968.90, 959,694.15 and 219,028.10

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Solution

The fourth proportional to 639,968.90, 959,694.15 and 219,028.10 is: 328,453.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,968.90 : 959,694.15 = 219,028.10 : x
  2. Step 2: Convert to fraction form
    639,968.90/959,694.15 = 219,028.10/x
  3. Step 3: Cross multiply
    639,968.90x = 959,694.15 × 219,028.10
  4. Step 4: Simplify right side
    639,968.90x = 210,199,986,255.62
  5. Step 5: Solve for x
    x = 210,199,986,255.62/639,968.90
  6. Step 6: Final answer
    x = 328,453.44

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1.5x scale

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.