Home / 863,420.80-1,295,131.20-726,563.20

Finding the Fourth Proportional to 863,420.80, 1,295,131.20 and 726,563.20

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Solution

The fourth proportional to 863,420.80, 1,295,131.20 and 726,563.20 is: 1,089,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,420.80 : 1,295,131.20 = 726,563.20 : x
  2. Step 2: Convert to fraction form
    863,420.80/1,295,131.20 = 726,563.20/x
  3. Step 3: Cross multiply
    863,420.80x = 1,295,131.20 × 726,563.20
  4. Step 4: Simplify right side
    863,420.80x = 940,994,669,091.84
  5. Step 5: Solve for x
    x = 940,994,669,091.84/863,420.80
  6. Step 6: Final answer
    x = 1,089,844.80

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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.