Home / 1,179,164.42-1,769,120.48-420,989.39

Finding the Fourth Proportional to 1,179,164.42, 1,769,120.48 and 420,989.39

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Solution

The fourth proportional to 1,179,164.42, 1,769,120.48 and 420,989.39 is: 631,617.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,164.42 : 1,769,120.48 = 420,989.39 : x
  2. Step 2: Convert to fraction form
    1,179,164.42/1,769,120.48 = 420,989.39/x
  3. Step 3: Cross multiply
    1,179,164.42x = 1,769,120.48 × 420,989.39
  4. Step 4: Simplify right side
    1,179,164.42x = 744,780,951,711.71
  5. Step 5: Solve for x
    x = 744,780,951,711.71/1,179,164.42
  6. Step 6: Final answer
    x = 631,617.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.