Home / 686,143.72-1,028,798.82-306,993.86

Finding the Fourth Proportional to 686,143.72, 1,028,798.82 and 306,993.86

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Solution

The fourth proportional to 686,143.72, 1,028,798.82 and 306,993.86 is: 460,304.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,143.72 : 1,028,798.82 = 306,993.86 : x
  2. Step 2: Convert to fraction form
    686,143.72/1,028,798.82 = 306,993.86/x
  3. Step 3: Cross multiply
    686,143.72x = 1,028,798.82 × 306,993.86
  4. Step 4: Simplify right side
    686,143.72x = 315,834,920,915.25
  5. Step 5: Solve for x
    x = 315,834,920,915.25/686,143.72
  6. Step 6: Final answer
    x = 460,304.32

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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.