Home / 693,013.80-1,039,520.70-394,415.40

Finding the Fourth Proportional to 693,013.80, 1,039,520.70 and 394,415.40

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Solution

The fourth proportional to 693,013.80, 1,039,520.70 and 394,415.40 is: 591,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,013.80 : 1,039,520.70 = 394,415.40 : x
  2. Step 2: Convert to fraction form
    693,013.80/1,039,520.70 = 394,415.40/x
  3. Step 3: Cross multiply
    693,013.80x = 1,039,520.70 × 394,415.40
  4. Step 4: Simplify right side
    693,013.80x = 410,002,972,698.78
  5. Step 5: Solve for x
    x = 410,002,972,698.78/693,013.80
  6. Step 6: Final answer
    x = 591,623.10

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1.5x scale

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.