Finding the Fourth Proportional to 7,764,374.40, 11,646,561.60 and 6,394,437.60
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Solution
The fourth proportional to 7,764,374.40, 11,646,561.60 and 6,394,437.60 is: 9,591,656.40
Step by Step Solution
- Step 1: Write the proportion equation
7,764,374.40 : 11,646,561.60 = 6,394,437.60 : x - Step 2: Convert to fraction form
7,764,374.40/11,646,561.60 = 6,394,437.60/x - Step 3: Cross multiply
7,764,374.40x = 11,646,561.60 × 6,394,437.60 - Step 4: Simplify right side
7,764,374.40x = 74,473,211,405,756.16 - Step 5: Solve for x
x = 74,473,211,405,756.16/7,764,374.40 - Step 6: Final answer
x = 9,591,656.40
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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.