Home / 1,434,138.49-1,979,035.95-789,432.76

Finding the Fourth Proportional to 1,434,138.49, 1,979,035.95 and 789,432.76

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Solution

The fourth proportional to 1,434,138.49, 1,979,035.95 and 789,432.76 is: 1,089,375.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,138.49 : 1,979,035.95 = 789,432.76 : x
  2. Step 2: Convert to fraction form
    1,434,138.49/1,979,035.95 = 789,432.76/x
  3. Step 3: Cross multiply
    1,434,138.49x = 1,979,035.95 × 789,432.76
  4. Step 4: Simplify right side
    1,434,138.49x = 1,562,315,812,147.72
  5. Step 5: Solve for x
    x = 1,562,315,812,147.72/1,434,138.49
  6. Step 6: Final answer
    x = 1,089,375.83

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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.