Finding the Fourth Proportional to 5,178,866.29, 7,147,261.00 and 2,856,213.12
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Solution
The fourth proportional to 5,178,866.29, 7,147,261.00 and 2,856,213.12 is: 3,941,808.78
Step by Step Solution
- Step 1: Write the proportion equation
5,178,866.29 : 7,147,261.00 = 2,856,213.12 : x - Step 2: Convert to fraction form
5,178,866.29/7,147,261.00 = 2,856,213.12/x - Step 3: Cross multiply
5,178,866.29x = 7,147,261.00 × 2,856,213.12 - Step 4: Simplify right side
5,178,866.29x = 20,414,100,602,298.70 - Step 5: Solve for x
x = 20,414,100,602,298.70/5,178,866.29 - Step 6: Final answer
x = 3,941,808.78
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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.