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Finding the Third Proportional to 394,482.50 and 640,904.75

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Solution

The third proportional to 394,482.50 and 640,904.75 is: 1,041,260.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,482.50 : 640,904.75 = 640,904.75 : x
  2. Step 2: Convert to fraction form
    394,482.50/640,904.75 = 640,904.75/x
  3. Step 3: Cross multiply
    394,482.50x = 640,904.75 × 640,904.75
  4. Step 4: Simplify right side
    394,482.50x = 410,758,898,572.56
  5. Step 5: Solve for x
    x = 410,758,898,572.56/394,482.50
  6. Step 6: Final answer
    x = 1,041,260.13

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.