Home / 1,434,009.69-1,978,989.84-789,489.90

Finding the Fourth Proportional to 1,434,009.69, 1,978,989.84 and 789,489.90

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Solution

The fourth proportional to 1,434,009.69, 1,978,989.84 and 789,489.90 is: 1,089,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,009.69 : 1,978,989.84 = 789,489.90 : x
  2. Step 2: Convert to fraction form
    1,434,009.69/1,978,989.84 = 789,489.90/x
  3. Step 3: Cross multiply
    1,434,009.69x = 1,978,989.84 × 789,489.90
  4. Step 4: Simplify right side
    1,434,009.69x = 1,562,392,490,882.62
  5. Step 5: Solve for x
    x = 1,562,392,490,882.62/1,434,009.69
  6. Step 6: Final answer
    x = 1,089,527.15

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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.