Home / 780,072.36-1,169,876.70-330,786.60

Finding the Fourth Proportional to 780,072.36, 1,169,876.70 and 330,786.60

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Solution

The fourth proportional to 780,072.36, 1,169,876.70 and 330,786.60 is: 496,081.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,072.36 : 1,169,876.70 = 330,786.60 : x
  2. Step 2: Convert to fraction form
    780,072.36/1,169,876.70 = 330,786.60/x
  3. Step 3: Cross multiply
    780,072.36x = 1,169,876.70 × 330,786.60
  4. Step 4: Simplify right side
    780,072.36x = 386,979,536,012.22
  5. Step 5: Solve for x
    x = 386,979,536,012.22/780,072.36
  6. Step 6: Final answer
    x = 496,081.59

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1.5x scale

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.