Home / 1,728,170.80-2,587,720.20-1,219,987.60

Finding the Fourth Proportional to 1,728,170.80, 2,587,720.20 and 1,219,987.60

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Solution

The fourth proportional to 1,728,170.80, 2,587,720.20 and 1,219,987.60 is: 1,826,779.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728,170.80 : 2,587,720.20 = 1,219,987.60 : x
  2. Step 2: Convert to fraction form
    1,728,170.80/2,587,720.20 = 1,219,987.60/x
  3. Step 3: Cross multiply
    1,728,170.80x = 2,587,720.20 × 1,219,987.60
  4. Step 4: Simplify right side
    1,728,170.80x = 3,156,986,556,269.52
  5. Step 5: Solve for x
    x = 3,156,986,556,269.52/1,728,170.80
  6. Step 6: Final answer
    x = 1,826,779.25

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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.