Home / 1,089,676.80-1,634,515.20-853,221.60

Finding the Fourth Proportional to 1,089,676.80, 1,634,515.20 and 853,221.60

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Solution

The fourth proportional to 1,089,676.80, 1,634,515.20 and 853,221.60 is: 1,279,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,676.80 : 1,634,515.20 = 853,221.60 : x
  2. Step 2: Convert to fraction form
    1,089,676.80/1,634,515.20 = 853,221.60/x
  3. Step 3: Cross multiply
    1,089,676.80x = 1,634,515.20 × 853,221.60
  4. Step 4: Simplify right side
    1,089,676.80x = 1,394,603,674,168.32
  5. Step 5: Solve for x
    x = 1,394,603,674,168.32/1,089,676.80
  6. Step 6: Final answer
    x = 1,279,832.40

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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.