Home / 1,434,134.60-1,979,030.62-789,428.87

Finding the Fourth Proportional to 1,434,134.60, 1,979,030.62 and 789,428.87

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Solution

The fourth proportional to 1,434,134.60, 1,979,030.62 and 789,428.87 is: 1,089,370.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,134.60 : 1,979,030.62 = 789,428.87 : x
  2. Step 2: Convert to fraction form
    1,434,134.60/1,979,030.62 = 789,428.87/x
  3. Step 3: Cross multiply
    1,434,134.60x = 1,979,030.62 × 789,428.87
  4. Step 4: Simplify right side
    1,434,134.60x = 1,562,303,906,042.00
  5. Step 5: Solve for x
    x = 1,562,303,906,042.00/1,434,134.60
  6. Step 6: Final answer
    x = 1,089,370.49

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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.