Finding the Fourth Proportional to 7,328,639.80, 10,992,959.70 and 5,509,930.60
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Solution
The fourth proportional to 7,328,639.80, 10,992,959.70 and 5,509,930.60 is: 8,264,895.90
Step by Step Solution
- Step 1: Write the proportion equation
7,328,639.80 : 10,992,959.70 = 5,509,930.60 : x - Step 2: Convert to fraction form
7,328,639.80/10,992,959.70 = 5,509,930.60/x - Step 3: Cross multiply
7,328,639.80x = 10,992,959.70 × 5,509,930.60 - Step 4: Simplify right side
7,328,639.80x = 60,570,445,035,596.81 - Step 5: Solve for x
x = 60,570,445,035,596.81/7,328,639.80 - Step 6: Final answer
x = 8,264,895.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.