Home / 1,434,137.85-1,979,035.10-789,432.12

Finding the Fourth Proportional to 1,434,137.85, 1,979,035.10 and 789,432.12

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Solution

The fourth proportional to 1,434,137.85, 1,979,035.10 and 789,432.12 is: 1,089,374.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,137.85 : 1,979,035.10 = 789,432.12 : x
  2. Step 2: Convert to fraction form
    1,434,137.85/1,979,035.10 = 789,432.12/x
  3. Step 3: Cross multiply
    1,434,137.85x = 1,979,035.10 × 789,432.12
  4. Step 4: Simplify right side
    1,434,137.85x = 1,562,313,870,600.25
  5. Step 5: Solve for x
    x = 1,562,313,870,600.25/1,434,137.85
  6. Step 6: Final answer
    x = 1,089,374.97

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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.