Home / 686,217.56-1,029,318.84-281,319.42

Finding the Fourth Proportional to 686,217.56, 1,029,318.84 and 281,319.42

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Solution

The fourth proportional to 686,217.56, 1,029,318.84 and 281,319.42 is: 421,976.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,217.56 : 1,029,318.84 = 281,319.42 : x
  2. Step 2: Convert to fraction form
    686,217.56/1,029,318.84 = 281,319.42/x
  3. Step 3: Cross multiply
    686,217.56x = 1,029,318.84 × 281,319.42
  4. Step 4: Simplify right side
    686,217.56x = 289,567,373,917.28
  5. Step 5: Solve for x
    x = 289,567,373,917.28/686,217.56
  6. Step 6: Final answer
    x = 421,976.05

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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.