Home / 1,318,811.40-1,978,195.64-420,241.01

Finding the Fourth Proportional to 1,318,811.40, 1,978,195.64 and 420,241.01

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Solution

The fourth proportional to 1,318,811.40, 1,978,195.64 and 420,241.01 is: 630,354.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,811.40 : 1,978,195.64 = 420,241.01 : x
  2. Step 2: Convert to fraction form
    1,318,811.40/1,978,195.64 = 420,241.01/x
  3. Step 3: Cross multiply
    1,318,811.40x = 1,978,195.64 × 420,241.01
  4. Step 4: Simplify right side
    1,318,811.40x = 831,318,921,739.01
  5. Step 5: Solve for x
    x = 831,318,921,739.01/1,318,811.40
  6. Step 6: Final answer
    x = 630,354.67

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.