Home / 643,749.40-965,619.30-194,469.40

Finding the Fourth Proportional to 643,749.40, 965,619.30 and 194,469.40

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Solution

The fourth proportional to 643,749.40, 965,619.30 and 194,469.40 is: 291,702.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,749.40 : 965,619.30 = 194,469.40 : x
  2. Step 2: Convert to fraction form
    643,749.40/965,619.30 = 194,469.40/x
  3. Step 3: Cross multiply
    643,749.40x = 965,619.30 × 194,469.40
  4. Step 4: Simplify right side
    643,749.40x = 187,783,405,899.42
  5. Step 5: Solve for x
    x = 187,783,405,899.42/643,749.40
  6. Step 6: Final answer
    x = 291,702.65

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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.