Home / 1,259,173.80-1,888,760.70-726,420.60

Finding the Fourth Proportional to 1,259,173.80, 1,888,760.70 and 726,420.60

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Solution

The fourth proportional to 1,259,173.80, 1,888,760.70 and 726,420.60 is: 1,089,630.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,173.80 : 1,888,760.70 = 726,420.60 : x
  2. Step 2: Convert to fraction form
    1,259,173.80/1,888,760.70 = 726,420.60/x
  3. Step 3: Cross multiply
    1,259,173.80x = 1,888,760.70 × 726,420.60
  4. Step 4: Simplify right side
    1,259,173.80x = 1,372,034,680,950.42
  5. Step 5: Solve for x
    x = 1,372,034,680,950.42/1,259,173.80
  6. Step 6: Final answer
    x = 1,089,630.90

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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.