Finding the Fourth Proportional to 686,589.35, 947,549.14 and 380,696.09
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Solution
The fourth proportional to 686,589.35, 947,549.14 and 380,696.09 is: 525,391.56
Step by Step Solution
- Step 1: Write the proportion equation
686,589.35 : 947,549.14 = 380,696.09 : x - Step 2: Convert to fraction form
686,589.35/947,549.14 = 380,696.09/x - Step 3: Cross multiply
686,589.35x = 947,549.14 × 380,696.09 - Step 4: Simplify right side
686,589.35x = 360,728,246,991.38 - Step 5: Solve for x
x = 360,728,246,991.38/686,589.35 - Step 6: Final answer
x = 525,391.56
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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.