Finding the Fourth Proportional to 7,890,336.20, 11,835,504.30 and 6,471,993.80
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Solution
The fourth proportional to 7,890,336.20, 11,835,504.30 and 6,471,993.80 is: 9,707,990.70
Step by Step Solution
- Step 1: Write the proportion equation
7,890,336.20 : 11,835,504.30 = 6,471,993.80 : x - Step 2: Convert to fraction form
7,890,336.20/11,835,504.30 = 6,471,993.80/x - Step 3: Cross multiply
7,890,336.20x = 11,835,504.30 × 6,471,993.80 - Step 4: Simplify right side
7,890,336.20x = 76,599,310,449,473.34 - Step 5: Solve for x
x = 76,599,310,449,473.34/7,890,336.20 - Step 6: Final answer
x = 9,707,990.70
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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.