Finding the Fourth Proportional to 7,920,971.13, 11,879,554.23 and 3,657,042.57
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Solution
The fourth proportional to 7,920,971.13, 11,879,554.23 and 3,657,042.57 is: 5,484,685.50
Step by Step Solution
- Step 1: Write the proportion equation
7,920,971.13 : 11,879,554.23 = 3,657,042.57 : x - Step 2: Convert to fraction form
7,920,971.13/11,879,554.23 = 3,657,042.57/x - Step 3: Cross multiply
7,920,971.13x = 11,879,554.23 × 3,657,042.57 - Step 4: Simplify right side
7,920,971.13x = 43,444,035,531,733.57 - Step 5: Solve for x
x = 43,444,035,531,733.57/7,920,971.13 - Step 6: Final answer
x = 5,484,685.50
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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.