Home / 1,259,339.80-1,889,009.70-726,586.60

Finding the Fourth Proportional to 1,259,339.80, 1,889,009.70 and 726,586.60

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Solution

The fourth proportional to 1,259,339.80, 1,889,009.70 and 726,586.60 is: 1,089,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,339.80 : 1,889,009.70 = 726,586.60 : x
  2. Step 2: Convert to fraction form
    1,259,339.80/1,889,009.70 = 726,586.60/x
  3. Step 3: Cross multiply
    1,259,339.80x = 1,889,009.70 × 726,586.60
  4. Step 4: Simplify right side
    1,259,339.80x = 1,372,529,135,290.02
  5. Step 5: Solve for x
    x = 1,372,529,135,290.02/1,259,339.80
  6. Step 6: Final answer
    x = 1,089,879.90

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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.