Finding the Fourth Proportional to 686,979.36, 947,837.70 and 445,272.12
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Solution
The fourth proportional to 686,979.36, 947,837.70 and 445,272.12 is: 614,349.90
Step by Step Solution
- Step 1: Write the proportion equation
686,979.36 : 947,837.70 = 445,272.12 : x - Step 2: Convert to fraction form
686,979.36/947,837.70 = 445,272.12/x - Step 3: Cross multiply
686,979.36x = 947,837.70 × 445,272.12 - Step 4: Simplify right side
686,979.36x = 422,045,702,094.92 - Step 5: Solve for x
x = 422,045,702,094.92/686,979.36 - Step 6: Final answer
x = 614,349.90
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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.