Home / 2,186,999.20-3,280,498.80-1,389,181.60

Finding the Fourth Proportional to 2,186,999.20, 3,280,498.80 and 1,389,181.60

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Solution

The fourth proportional to 2,186,999.20, 3,280,498.80 and 1,389,181.60 is: 2,083,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186,999.20 : 3,280,498.80 = 1,389,181.60 : x
  2. Step 2: Convert to fraction form
    2,186,999.20/3,280,498.80 = 1,389,181.60/x
  3. Step 3: Cross multiply
    2,186,999.20x = 3,280,498.80 × 1,389,181.60
  4. Step 4: Simplify right side
    2,186,999.20x = 4,557,208,571,782.08
  5. Step 5: Solve for x
    x = 4,557,208,571,782.08/2,186,999.20
  6. Step 6: Final answer
    x = 2,083,772.40

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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.