Finding the Fourth Proportional to 5,078,662.92, 7,008,640.56 and 2,787,036.84
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Solution
The fourth proportional to 5,078,662.92, 7,008,640.56 and 2,787,036.84 is: 3,846,157.89
Step by Step Solution
- Step 1: Write the proportion equation
5,078,662.92 : 7,008,640.56 = 2,787,036.84 : x - Step 2: Convert to fraction form
5,078,662.92/7,008,640.56 = 2,787,036.84/x - Step 3: Cross multiply
5,078,662.92x = 7,008,640.56 × 2,787,036.84 - Step 4: Simplify right side
5,078,662.92x = 19,533,339,439,038.23 - Step 5: Solve for x
x = 19,533,339,439,038.23/5,078,662.92 - Step 6: Final answer
x = 3,846,157.89
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1.5x scale
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.