Home / 1,318,785.26-1,978,156.23-420,214.82

Finding the Fourth Proportional to 1,318,785.26, 1,978,156.23 and 420,214.82

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Solution

The fourth proportional to 1,318,785.26, 1,978,156.23 and 420,214.82 is: 630,315.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,785.26 : 1,978,156.23 = 420,214.82 : x
  2. Step 2: Convert to fraction form
    1,318,785.26/1,978,156.23 = 420,214.82/x
  3. Step 3: Cross multiply
    1,318,785.26x = 1,978,156.23 × 420,214.82
  4. Step 4: Simplify right side
    1,318,785.26x = 831,250,554,230.55
  5. Step 5: Solve for x
    x = 831,250,554,230.55/1,318,785.26
  6. Step 6: Final answer
    x = 630,315.32

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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.