Finding the Fourth Proportional to 6,436,765.20, 9,661,368.60 and 3,245,494.80
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Solution
The fourth proportional to 6,436,765.20, 9,661,368.60 and 3,245,494.80 is: 4,871,378.80
Step by Step Solution
- Step 1: Write the proportion equation
6,436,765.20 : 9,661,368.60 = 3,245,494.80 : x - Step 2: Convert to fraction form
6,436,765.20/9,661,368.60 = 3,245,494.80/x - Step 3: Cross multiply
6,436,765.20x = 9,661,368.60 × 3,245,494.80 - Step 4: Simplify right side
6,436,765.20x = 31,355,921,552,183.28 - Step 5: Solve for x
x = 31,355,921,552,183.28/6,436,765.20 - Step 6: Final answer
x = 4,871,378.80
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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.