Home / 686,142.72-1,028,797.32-306,992.86

Finding the Fourth Proportional to 686,142.72, 1,028,797.32 and 306,992.86

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Solution

The fourth proportional to 686,142.72, 1,028,797.32 and 306,992.86 is: 460,302.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,142.72 : 1,028,797.32 = 306,992.86 : x
  2. Step 2: Convert to fraction form
    686,142.72/1,028,797.32 = 306,992.86/x
  3. Step 3: Cross multiply
    686,142.72x = 1,028,797.32 × 306,992.86
  4. Step 4: Simplify right side
    686,142.72x = 315,833,431,627.14
  5. Step 5: Solve for x
    x = 315,833,431,627.14/686,142.72
  6. Step 6: Final answer
    x = 460,302.82

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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.