Home / 1,089,424.20-1,630,910.70-810,179.40

Finding the Fourth Proportional to 1,089,424.20, 1,630,910.70 and 810,179.40

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Solution

The fourth proportional to 1,089,424.20, 1,630,910.70 and 810,179.40 is: 1,212,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,424.20 : 1,630,910.70 = 810,179.40 : x
  2. Step 2: Convert to fraction form
    1,089,424.20/1,630,910.70 = 810,179.40/x
  3. Step 3: Cross multiply
    1,089,424.20x = 1,630,910.70 × 810,179.40
  4. Step 4: Simplify right side
    1,089,424.20x = 1,321,330,252,379.58
  5. Step 5: Solve for x
    x = 1,321,330,252,379.58/1,089,424.20
  6. Step 6: Final answer
    x = 1,212,870.30

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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.