Finding the Fourth Proportional to 7,407,981.40, 11,135,591.70 and 6,982,828.60
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Solution
The fourth proportional to 7,407,981.40, 11,135,591.70 and 6,982,828.60 is: 10,496,506.94
Step by Step Solution
- Step 1: Write the proportion equation
7,407,981.40 : 11,135,591.70 = 6,982,828.60 : x - Step 2: Convert to fraction form
7,407,981.40/11,135,591.70 = 6,982,828.60/x - Step 3: Cross multiply
7,407,981.40x = 11,135,591.70 × 6,982,828.60 - Step 4: Simplify right side
7,407,981.40x = 77,757,928,200,682.61 - Step 5: Solve for x
x = 77,757,928,200,682.61/7,407,981.40 - Step 6: Final answer
x = 10,496,506.94
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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.