Home / 643,822.70-965,734.05-194,612.90

Finding the Fourth Proportional to 643,822.70, 965,734.05 and 194,612.90

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Solution

The fourth proportional to 643,822.70, 965,734.05 and 194,612.90 is: 291,919.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,822.70 : 965,734.05 = 194,612.90 : x
  2. Step 2: Convert to fraction form
    643,822.70/965,734.05 = 194,612.90/x
  3. Step 3: Cross multiply
    643,822.70x = 965,734.05 × 194,612.90
  4. Step 4: Simplify right side
    643,822.70x = 187,944,304,099.25
  5. Step 5: Solve for x
    x = 187,944,304,099.25/643,822.70
  6. Step 6: Final answer
    x = 291,919.35

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Similar ratio
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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.