Home / 839,920.20-1,259,880.30-540,738.60

Finding the Fourth Proportional to 839,920.20, 1,259,880.30 and 540,738.60

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Solution

The fourth proportional to 839,920.20, 1,259,880.30 and 540,738.60 is: 811,107.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,920.20 : 1,259,880.30 = 540,738.60 : x
  2. Step 2: Convert to fraction form
    839,920.20/1,259,880.30 = 540,738.60/x
  3. Step 3: Cross multiply
    839,920.20x = 1,259,880.30 × 540,738.60
  4. Step 4: Simplify right side
    839,920.20x = 681,265,909,589.58
  5. Step 5: Solve for x
    x = 681,265,909,589.58/839,920.20
  6. Step 6: Final answer
    x = 811,107.90

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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.