Home / 1,210,367.27-1,669,745.75-780,785.80

Finding the Fourth Proportional to 1,210,367.27, 1,669,745.75 and 780,785.80

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Solution

The fourth proportional to 1,210,367.27, 1,669,745.75 and 780,785.80 is: 1,077,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,367.27 : 1,669,745.75 = 780,785.80 : x
  2. Step 2: Convert to fraction form
    1,210,367.27/1,669,745.75 = 780,785.80/x
  3. Step 3: Cross multiply
    1,210,367.27x = 1,669,745.75 × 780,785.80
  4. Step 4: Simplify right side
    1,210,367.27x = 1,303,713,763,132.06
  5. Step 5: Solve for x
    x = 1,303,713,763,132.06/1,210,367.27
  6. Step 6: Final answer
    x = 1,077,122.45

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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.