Home / 693,380.72-1,039,220.40-394,112

Finding the Fourth Proportional to 693,380.72, 1,039,220.40 and 394,112

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Solution

The fourth proportional to 693,380.72, 1,039,220.40 and 394,112 is: 590,684.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,380.72 : 1,039,220.40 = 394,112 : x
  2. Step 2: Convert to fraction form
    693,380.72/1,039,220.40 = 394,112/x
  3. Step 3: Cross multiply
    693,380.72x = 1,039,220.40 × 394,112
  4. Step 4: Simplify right side
    693,380.72x = 409,569,230,284.80
  5. Step 5: Solve for x
    x = 409,569,230,284.80/693,380.72
  6. Step 6: Final answer
    x = 590,684.48

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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.