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Finding the Fourth Proportional to 661,659.98, 992,588.39 and 306,709.88

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Solution

The fourth proportional to 661,659.98, 992,588.39 and 306,709.88 is: 460,110.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,659.98 : 992,588.39 = 306,709.88 : x
  2. Step 2: Convert to fraction form
    661,659.98/992,588.39 = 306,709.88/x
  3. Step 3: Cross multiply
    661,659.98x = 992,588.39 × 306,709.88
  4. Step 4: Simplify right side
    661,659.98x = 304,436,665,986.29
  5. Step 5: Solve for x
    x = 304,436,665,986.29/661,659.98
  6. Step 6: Final answer
    x = 460,110.44

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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.