Home / 1,161,015.80-1,739,190.90-783,102.20

Finding the Fourth Proportional to 1,161,015.80, 1,739,190.90 and 783,102.20

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Solution

The fourth proportional to 1,161,015.80, 1,739,190.90 and 783,102.20 is: 1,173,079.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161,015.80 : 1,739,190.90 = 783,102.20 : x
  2. Step 2: Convert to fraction form
    1,161,015.80/1,739,190.90 = 783,102.20/x
  3. Step 3: Cross multiply
    1,161,015.80x = 1,739,190.90 × 783,102.20
  4. Step 4: Simplify right side
    1,161,015.80x = 1,361,964,220,009.98
  5. Step 5: Solve for x
    x = 1,361,964,220,009.98/1,161,015.80
  6. Step 6: Final answer
    x = 1,173,079.83

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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.