Home / 1,325,779.20-1,986,627.60-987,231.60

Finding the Fourth Proportional to 1,325,779.20, 1,986,627.60 and 987,231.60

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Solution

The fourth proportional to 1,325,779.20, 1,986,627.60 and 987,231.60 is: 1,479,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,779.20 : 1,986,627.60 = 987,231.60 : x
  2. Step 2: Convert to fraction form
    1,325,779.20/1,986,627.60 = 987,231.60/x
  3. Step 3: Cross multiply
    1,325,779.20x = 1,986,627.60 × 987,231.60
  4. Step 4: Simplify right side
    1,325,779.20x = 1,961,261,544,152.16
  5. Step 5: Solve for x
    x = 1,961,261,544,152.16/1,325,779.20
  6. Step 6: Final answer
    x = 1,479,327.44

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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.