Home / 1,089,422.70-1,630,908.45-810,177.90

Finding the Fourth Proportional to 1,089,422.70, 1,630,908.45 and 810,177.90

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Solution

The fourth proportional to 1,089,422.70, 1,630,908.45 and 810,177.90 is: 1,212,868.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,422.70 : 1,630,908.45 = 810,177.90 : x
  2. Step 2: Convert to fraction form
    1,089,422.70/1,630,908.45 = 810,177.90/x
  3. Step 3: Cross multiply
    1,089,422.70x = 1,630,908.45 × 810,177.90
  4. Step 4: Simplify right side
    1,089,422.70x = 1,321,325,983,113.25
  5. Step 5: Solve for x
    x = 1,321,325,983,113.25/1,089,422.70
  6. Step 6: Final answer
    x = 1,212,868.05

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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.