Home / 427,235.43-640,981.61-127,725.75

Finding the Fourth Proportional to 427,235.43, 640,981.61 and 127,725.75

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Solution

The fourth proportional to 427,235.43, 640,981.61 and 127,725.75 is: 191,627.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,235.43 : 640,981.61 = 127,725.75 : x
  2. Step 2: Convert to fraction form
    427,235.43/640,981.61 = 127,725.75/x
  3. Step 3: Cross multiply
    427,235.43x = 640,981.61 × 127,725.75
  4. Step 4: Simplify right side
    427,235.43x = 81,869,856,234.83
  5. Step 5: Solve for x
    x = 81,869,856,234.83/427,235.43
  6. Step 6: Final answer
    x = 191,627.03

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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.