Home / 639,772.14-959,336.30-213,156.84

Finding the Fourth Proportional to 639,772.14, 959,336.30 and 213,156.84

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Solution

The fourth proportional to 639,772.14, 959,336.30 and 213,156.84 is: 319,628.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,772.14 : 959,336.30 = 213,156.84 : x
  2. Step 2: Convert to fraction form
    639,772.14/959,336.30 = 213,156.84/x
  3. Step 3: Cross multiply
    639,772.14x = 959,336.30 × 213,156.84
  4. Step 4: Simplify right side
    639,772.14x = 204,489,094,205.29
  5. Step 5: Solve for x
    x = 204,489,094,205.29/639,772.14
  6. Step 6: Final answer
    x = 319,628.01

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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.