Home / 858,844.60-1,288,266.90-780,112.60

Finding the Fourth Proportional to 858,844.60, 1,288,266.90 and 780,112.60

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Solution

The fourth proportional to 858,844.60, 1,288,266.90 and 780,112.60 is: 1,170,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,844.60 : 1,288,266.90 = 780,112.60 : x
  2. Step 2: Convert to fraction form
    858,844.60/1,288,266.90 = 780,112.60/x
  3. Step 3: Cross multiply
    858,844.60x = 1,288,266.90 × 780,112.60
  4. Step 4: Simplify right side
    858,844.60x = 1,004,993,240,852.94
  5. Step 5: Solve for x
    x = 1,004,993,240,852.94/858,844.60
  6. Step 6: Final answer
    x = 1,170,168.90

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Similar ratio
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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.