Finding the Fourth Proportional to 7,989,015.40, 11,983,523.10 and 6,660,412.90
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Solution
The fourth proportional to 7,989,015.40, 11,983,523.10 and 6,660,412.90 is: 9,990,619.35
Step by Step Solution
- Step 1: Write the proportion equation
7,989,015.40 : 11,983,523.10 = 6,660,412.90 : x - Step 2: Convert to fraction form
7,989,015.40/11,983,523.10 = 6,660,412.90/x - Step 3: Cross multiply
7,989,015.40x = 11,983,523.10 × 6,660,412.90 - Step 4: Simplify right side
7,989,015.40x = 79,815,211,842,687.98 - Step 5: Solve for x
x = 79,815,211,842,687.98/7,989,015.40 - Step 6: Final answer
x = 9,990,619.35
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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.