Finding the Fourth Proportional to 1,388,076.99, 1,915,551.39 and 807,439.44
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Solution
The fourth proportional to 1,388,076.99, 1,915,551.39 and 807,439.44 is: 1,114,269.42
Step by Step Solution
- Step 1: Write the proportion equation
1,388,076.99 : 1,915,551.39 = 807,439.44 : x - Step 2: Convert to fraction form
1,388,076.99/1,915,551.39 = 807,439.44/x - Step 3: Cross multiply
1,388,076.99x = 1,915,551.39 × 807,439.44 - Step 4: Simplify right side
1,388,076.99x = 1,546,691,741,632.82 - Step 5: Solve for x
x = 1,546,691,741,632.82/1,388,076.99 - Step 6: Final answer
x = 1,114,269.42
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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.