Home / 683,406.80-1,025,110.20-398,805.20

Finding the Fourth Proportional to 683,406.80, 1,025,110.20 and 398,805.20

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Solution

The fourth proportional to 683,406.80, 1,025,110.20 and 398,805.20 is: 598,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,406.80 : 1,025,110.20 = 398,805.20 : x
  2. Step 2: Convert to fraction form
    683,406.80/1,025,110.20 = 398,805.20/x
  3. Step 3: Cross multiply
    683,406.80x = 1,025,110.20 × 398,805.20
  4. Step 4: Simplify right side
    683,406.80x = 408,819,278,333.04
  5. Step 5: Solve for x
    x = 408,819,278,333.04/683,406.80
  6. Step 6: Final answer
    x = 598,207.80

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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.