Home / 1,222,295.36-1,686,742.18-678,399.24

Finding the Fourth Proportional to 1,222,295.36, 1,686,742.18 and 678,399.24

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Solution

The fourth proportional to 1,222,295.36, 1,686,742.18 and 678,399.24 is: 936,176.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,295.36 : 1,686,742.18 = 678,399.24 : x
  2. Step 2: Convert to fraction form
    1,222,295.36/1,686,742.18 = 678,399.24/x
  3. Step 3: Cross multiply
    1,222,295.36x = 1,686,742.18 × 678,399.24
  4. Step 4: Simplify right side
    1,222,295.36x = 1,144,284,612,987.94
  5. Step 5: Solve for x
    x = 1,144,284,612,987.94/1,222,295.36
  6. Step 6: Final answer
    x = 936,176.84

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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.