Home / 1,434,137.60-1,979,034.75-789,431.87

Finding the Fourth Proportional to 1,434,137.60, 1,979,034.75 and 789,431.87

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Solution

The fourth proportional to 1,434,137.60, 1,979,034.75 and 789,431.87 is: 1,089,374.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,137.60 : 1,979,034.75 = 789,431.87 : x
  2. Step 2: Convert to fraction form
    1,434,137.60/1,979,034.75 = 789,431.87/x
  3. Step 3: Cross multiply
    1,434,137.60x = 1,979,034.75 × 789,431.87
  4. Step 4: Simplify right side
    1,434,137.60x = 1,562,313,103,487.48
  5. Step 5: Solve for x
    x = 1,562,313,103,487.48/1,434,137.60
  6. Step 6: Final answer
    x = 1,089,374.62

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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.