Finding the Fourth Proportional to 7,770,941.60, 11,651,746.80 and 3,991,805.60
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Solution
The fourth proportional to 7,770,941.60, 11,651,746.80 and 3,991,805.60 is: 5,985,311.76
Step by Step Solution
- Step 1: Write the proportion equation
7,770,941.60 : 11,651,746.80 = 3,991,805.60 : x - Step 2: Convert to fraction form
7,770,941.60/11,651,746.80 = 3,991,805.60/x - Step 3: Cross multiply
7,770,941.60x = 11,651,746.80 × 3,991,805.60 - Step 4: Simplify right side
7,770,941.60x = 46,511,508,126,022.09 - Step 5: Solve for x
x = 46,511,508,126,022.09/7,770,941.60 - Step 6: Final answer
x = 5,985,311.76
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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.