Home / 1,318,814.78-1,978,200.68-420,244.38

Finding the Fourth Proportional to 1,318,814.78, 1,978,200.68 and 420,244.38

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Solution

The fourth proportional to 1,318,814.78, 1,978,200.68 and 420,244.38 is: 630,359.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,814.78 : 1,978,200.68 = 420,244.38 : x
  2. Step 2: Convert to fraction form
    1,318,814.78/1,978,200.68 = 420,244.38/x
  3. Step 3: Cross multiply
    1,318,814.78x = 1,978,200.68 × 420,244.38
  4. Step 4: Simplify right side
    1,318,814.78x = 831,327,716,180.96
  5. Step 5: Solve for x
    x = 831,327,716,180.96/1,318,814.78
  6. Step 6: Final answer
    x = 630,359.72

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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.