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Finding the Fourth Proportional to 499,717.13, 689,609.66 and 270,274.46

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Solution

The fourth proportional to 499,717.13, 689,609.66 and 270,274.46 is: 372,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,717.13 : 689,609.66 = 270,274.46 : x
  2. Step 2: Convert to fraction form
    499,717.13/689,609.66 = 270,274.46/x
  3. Step 3: Cross multiply
    499,717.13x = 689,609.66 × 270,274.46
  4. Step 4: Simplify right side
    499,717.13x = 186,383,873,667.86
  5. Step 5: Solve for x
    x = 186,383,873,667.86/499,717.13
  6. Step 6: Final answer
    x = 372,978.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.