Finding the Fourth Proportional to 7,117,138.49, 9,821,633.37 and 3,853,953.02
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Solution
The fourth proportional to 7,117,138.49, 9,821,633.37 and 3,853,953.02 is: 5,318,445.55
Step by Step Solution
- Step 1: Write the proportion equation
7,117,138.49 : 9,821,633.37 = 3,853,953.02 : x - Step 2: Convert to fraction form
7,117,138.49/9,821,633.37 = 3,853,953.02/x - Step 3: Cross multiply
7,117,138.49x = 9,821,633.37 × 3,853,953.02 - Step 4: Simplify right side
7,117,138.49x = 37,852,113,538,536.11 - Step 5: Solve for x
x = 37,852,113,538,536.11/7,117,138.49 - Step 6: Final answer
x = 5,318,445.55
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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.