Home / 613,961.72-921,067.13-193,139.72

Finding the Fourth Proportional to 613,961.72, 921,067.13 and 193,139.72

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Solution

The fourth proportional to 613,961.72, 921,067.13 and 193,139.72 is: 289,748.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,961.72 : 921,067.13 = 193,139.72 : x
  2. Step 2: Convert to fraction form
    613,961.72/921,067.13 = 193,139.72/x
  3. Step 3: Cross multiply
    613,961.72x = 921,067.13 × 193,139.72
  4. Step 4: Simplify right side
    613,961.72x = 177,894,643,466.92
  5. Step 5: Solve for x
    x = 177,894,643,466.92/613,961.72
  6. Step 6: Final answer
    x = 289,748.76

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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.