Finding the Fourth Proportional to 10,285,814.68, 14,194,616.70 and 5,639,291.80
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Solution
The fourth proportional to 10,285,814.68, 14,194,616.70 and 5,639,291.80 is: 7,782,328.19
Step by Step Solution
- Step 1: Write the proportion equation
10,285,814.68 : 14,194,616.70 = 5,639,291.80 : x - Step 2: Convert to fraction form
10,285,814.68/14,194,616.70 = 5,639,291.80/x - Step 3: Cross multiply
10,285,814.68x = 14,194,616.70 × 5,639,291.80 - Step 4: Simplify right side
10,285,814.68x = 80,047,585,560,453.05 - Step 5: Solve for x
x = 80,047,585,560,453.05/10,285,814.68 - Step 6: Final answer
x = 7,782,328.19
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.