Home / 643,181.38-964,911.39-193,864.66

Finding the Fourth Proportional to 643,181.38, 964,911.39 and 193,864.66

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Solution

The fourth proportional to 643,181.38, 964,911.39 and 193,864.66 is: 290,838.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,181.38 : 964,911.39 = 193,864.66 : x
  2. Step 2: Convert to fraction form
    643,181.38/964,911.39 = 193,864.66/x
  3. Step 3: Cross multiply
    643,181.38x = 964,911.39 × 193,864.66
  4. Step 4: Simplify right side
    643,181.38x = 187,062,215,413.21
  5. Step 5: Solve for x
    x = 187,062,215,413.21/643,181.38
  6. Step 6: Final answer
    x = 290,838.98

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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.