Finding the Fourth Proportional to 7,979,928.36, 11,012,371.08 and 4,542,390.42
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Solution
The fourth proportional to 7,979,928.36, 11,012,371.08 and 4,542,390.42 is: 6,268,538.59
Step by Step Solution
- Step 1: Write the proportion equation
7,979,928.36 : 11,012,371.08 = 4,542,390.42 : x - Step 2: Convert to fraction form
7,979,928.36/11,012,371.08 = 4,542,390.42/x - Step 3: Cross multiply
7,979,928.36x = 11,012,371.08 × 4,542,390.42 - Step 4: Simplify right side
7,979,928.36x = 50,022,488,895,277.05 - Step 5: Solve for x
x = 50,022,488,895,277.05/7,979,928.36 - Step 6: Final answer
x = 6,268,538.59
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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.