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Finding the Fourth Proportional to 499,787.28, 689,704.38 and 270,344.70

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Solution

The fourth proportional to 499,787.28, 689,704.38 and 270,344.70 is: 373,074.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,787.28 : 689,704.38 = 270,344.70 : x
  2. Step 2: Convert to fraction form
    499,787.28/689,704.38 = 270,344.70/x
  3. Step 3: Cross multiply
    499,787.28x = 689,704.38 × 270,344.70
  4. Step 4: Simplify right side
    499,787.28x = 186,457,923,699.79
  5. Step 5: Solve for x
    x = 186,457,923,699.79/499,787.28
  6. Step 6: Final answer
    x = 373,074.57

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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.