Finding the Fourth Proportional to 10,902,642.30, 15,045,647.67 and 6,321,620.70
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Solution
The fourth proportional to 10,902,642.30, 15,045,647.67 and 6,321,620.70 is: 8,723,837.32
Step by Step Solution
- Step 1: Write the proportion equation
10,902,642.30 : 15,045,647.67 = 6,321,620.70 : x - Step 2: Convert to fraction form
10,902,642.30/15,045,647.67 = 6,321,620.70/x - Step 3: Cross multiply
10,902,642.30x = 15,045,647.67 × 6,321,620.70 - Step 4: Simplify right side
10,902,642.30x = 95,112,877,755,578.77 - Step 5: Solve for x
x = 95,112,877,755,578.77/10,902,642.30 - Step 6: Final answer
x = 8,723,837.32
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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.