Home / 1,369,770.54-1,890,117.72-789,183.60

Finding the Fourth Proportional to 1,369,770.54, 1,890,117.72 and 789,183.60

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Solution

The fourth proportional to 1,369,770.54, 1,890,117.72 and 789,183.60 is: 1,088,977.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,770.54 : 1,890,117.72 = 789,183.60 : x
  2. Step 2: Convert to fraction form
    1,369,770.54/1,890,117.72 = 789,183.60/x
  3. Step 3: Cross multiply
    1,369,770.54x = 1,890,117.72 × 789,183.60
  4. Step 4: Simplify right side
    1,369,770.54x = 1,491,649,906,693.39
  5. Step 5: Solve for x
    x = 1,491,649,906,693.39/1,369,770.54
  6. Step 6: Final answer
    x = 1,088,977.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.