Home / 643,799.40-965,694.30-194,519.40

Finding the Fourth Proportional to 643,799.40, 965,694.30 and 194,519.40

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Solution

The fourth proportional to 643,799.40, 965,694.30 and 194,519.40 is: 291,777.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,799.40 : 965,694.30 = 194,519.40 : x
  2. Step 2: Convert to fraction form
    643,799.40/965,694.30 = 194,519.40/x
  3. Step 3: Cross multiply
    643,799.40x = 965,694.30 × 194,519.40
  4. Step 4: Simplify right side
    643,799.40x = 187,846,275,819.42
  5. Step 5: Solve for x
    x = 187,846,275,819.42/643,799.40
  6. Step 6: Final answer
    x = 291,777.65

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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.