Finding the Fourth Proportional to 7,891,905.80, 11,837,858.70 and 3,640,377.80
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Solution
The fourth proportional to 7,891,905.80, 11,837,858.70 and 3,640,377.80 is: 5,460,566.70
Step by Step Solution
- Step 1: Write the proportion equation
7,891,905.80 : 11,837,858.70 = 3,640,377.80 : x - Step 2: Convert to fraction form
7,891,905.80/11,837,858.70 = 3,640,377.80/x - Step 3: Cross multiply
7,891,905.80x = 11,837,858.70 × 3,640,377.80 - Step 4: Simplify right side
7,891,905.80x = 43,094,278,011,016.85 - Step 5: Solve for x
x = 43,094,278,011,016.85/7,891,905.80 - Step 6: Final answer
x = 5,460,566.70
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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.