Finding the Fourth Proportional to 7,207,159.49, 9,945,880.77 and 3,943,974.05
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Solution
The fourth proportional to 7,207,159.49, 9,945,880.77 and 3,943,974.05 is: 5,442,684.56
Step by Step Solution
- Step 1: Write the proportion equation
7,207,159.49 : 9,945,880.77 = 3,943,974.05 : x - Step 2: Convert to fraction form
7,207,159.49/9,945,880.77 = 3,943,974.05/x - Step 3: Cross multiply
7,207,159.49x = 9,945,880.77 × 3,943,974.05 - Step 4: Simplify right side
7,207,159.49x = 39,226,295,700,928.62 - Step 5: Solve for x
x = 39,226,295,700,928.62/7,207,159.49 - Step 6: Final answer
x = 5,442,684.56
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1.5x scale
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.