Finding the Fourth Proportional to 7,117,039.20, 9,821,519.28 and 3,853,879.68
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Solution
The fourth proportional to 7,117,039.20, 9,821,519.28 and 3,853,879.68 is: 5,318,356.77
Step by Step Solution
- Step 1: Write the proportion equation
7,117,039.20 : 9,821,519.28 = 3,853,879.68 : x - Step 2: Convert to fraction form
7,117,039.20/9,821,519.28 = 3,853,879.68/x - Step 3: Cross multiply
7,117,039.20x = 9,821,519.28 × 3,853,879.68 - Step 4: Simplify right side
7,117,039.20x = 37,850,953,579,920.23 - Step 5: Solve for x
x = 37,850,953,579,920.23/7,117,039.20 - Step 6: Final answer
x = 5,318,356.77
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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.