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Finding the Fourth Proportional to 661,838.82, 991,885.83 and 262,261.62

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Solution

The fourth proportional to 661,838.82, 991,885.83 and 262,261.62 is: 393,046.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,838.82 : 991,885.83 = 262,261.62 : x
  2. Step 2: Convert to fraction form
    661,838.82/991,885.83 = 262,261.62/x
  3. Step 3: Cross multiply
    661,838.82x = 991,885.83 × 262,261.62
  4. Step 4: Simplify right side
    661,838.82x = 260,133,587,174.65
  5. Step 5: Solve for x
    x = 260,133,587,174.65/661,838.82
  6. Step 6: Final answer
    x = 393,046.73

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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.