Home / 1,919,520.40-2,880,274.20-783,115.60

Finding the Fourth Proportional to 1,919,520.40, 2,880,274.20 and 783,115.60

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Solution

The fourth proportional to 1,919,520.40, 2,880,274.20 and 783,115.60 is: 1,175,078.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,520.40 : 2,880,274.20 = 783,115.60 : x
  2. Step 2: Convert to fraction form
    1,919,520.40/2,880,274.20 = 783,115.60/x
  3. Step 3: Cross multiply
    1,919,520.40x = 2,880,274.20 × 783,115.60
  4. Step 4: Simplify right side
    1,919,520.40x = 2,255,587,658,297.52
  5. Step 5: Solve for x
    x = 2,255,587,658,297.52/1,919,520.40
  6. Step 6: Final answer
    x = 1,175,078.76

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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.