Home / 640,217.46-883,684.18-422,584.98

Finding the Fourth Proportional to 640,217.46, 883,684.18 and 422,584.98

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Solution

The fourth proportional to 640,217.46, 883,684.18 and 422,584.98 is: 583,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,217.46 : 883,684.18 = 422,584.98 : x
  2. Step 2: Convert to fraction form
    640,217.46/883,684.18 = 422,584.98/x
  3. Step 3: Cross multiply
    640,217.46x = 883,684.18 × 422,584.98
  4. Step 4: Simplify right side
    640,217.46x = 373,431,661,531.62
  5. Step 5: Solve for x
    x = 373,431,661,531.62/640,217.46
  6. Step 6: Final answer
    x = 583,288.78

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1.5x scale

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.