Finding the Fourth Proportional to 681,109.36, 939,863.64 and 379,331.44
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Solution
The fourth proportional to 681,109.36, 939,863.64 and 379,331.44 is: 523,439.92
Step by Step Solution
- Step 1: Write the proportion equation
681,109.36 : 939,863.64 = 379,331.44 : x - Step 2: Convert to fraction form
681,109.36/939,863.64 = 379,331.44/x - Step 3: Cross multiply
681,109.36x = 939,863.64 × 379,331.44 - Step 4: Simplify right side
681,109.36x = 356,519,827,964.84 - Step 5: Solve for x
x = 356,519,827,964.84/681,109.36 - Step 6: Final answer
x = 523,439.92
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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.