Finding the Fourth Proportional to 405,825,905.80, 608,738,858.70 and 405,825,905.80
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Solution
The fourth proportional to 405,825,905.80, 608,738,858.70 and 405,825,905.80 is: 608,738,858.70
Step by Step Solution
- Step 1: Write the proportion equation
405,825,905.80 : 608,738,858.70 = 405,825,905.80 : x - Step 2: Convert to fraction form
405,825,905.80/608,738,858.70 = 405,825,905.80/x - Step 3: Cross multiply
405,825,905.80x = 608,738,858.70 × 405,825,905.80 - Step 4: Simplify right side
405,825,905.80x = 247,041,998,727,585,728 - Step 5: Solve for x
x = 247,041,998,727,585,728/405,825,905.80 - Step 6: Final answer
x = 608,738,858.70
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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.