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Finding the Fourth Proportional to 659,013.57, 988,164.87 and 298,987.96

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Solution

The fourth proportional to 659,013.57, 988,164.87 and 298,987.96 is: 448,320.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,013.57 : 988,164.87 = 298,987.96 : x
  2. Step 2: Convert to fraction form
    659,013.57/988,164.87 = 298,987.96/x
  3. Step 3: Cross multiply
    659,013.57x = 988,164.87 × 298,987.96
  4. Step 4: Simplify right side
    659,013.57x = 295,449,396,886.16
  5. Step 5: Solve for x
    x = 295,449,396,886.16/659,013.57
  6. Step 6: Final answer
    x = 448,320.66

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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.