Home / 1,318,747.43-1,978,099.53-420,176.96

Finding the Fourth Proportional to 1,318,747.43, 1,978,099.53 and 420,176.96

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Solution

The fourth proportional to 1,318,747.43, 1,978,099.53 and 420,176.96 is: 630,258.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,747.43 : 1,978,099.53 = 420,176.96 : x
  2. Step 2: Convert to fraction form
    1,318,747.43/1,978,099.53 = 420,176.96/x
  3. Step 3: Cross multiply
    1,318,747.43x = 1,978,099.53 × 420,176.96
  4. Step 4: Simplify right side
    1,318,747.43x = 831,151,847,092.83
  5. Step 5: Solve for x
    x = 831,151,847,092.83/1,318,747.43
  6. Step 6: Final answer
    x = 630,258.55

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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.