Home / 1,434,143.52-1,979,042.85-789,437.79

Finding the Fourth Proportional to 1,434,143.52, 1,979,042.85 and 789,437.79

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Solution

The fourth proportional to 1,434,143.52, 1,979,042.85 and 789,437.79 is: 1,089,382.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,143.52 : 1,979,042.85 = 789,437.79 : x
  2. Step 2: Convert to fraction form
    1,434,143.52/1,979,042.85 = 789,437.79/x
  3. Step 3: Cross multiply
    1,434,143.52x = 1,979,042.85 × 789,437.79
  4. Step 4: Simplify right side
    1,434,143.52x = 1,562,331,213,819.30
  5. Step 5: Solve for x
    x = 1,562,331,213,819.30/1,434,143.52
  6. Step 6: Final answer
    x = 1,089,382.75

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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.