Finding the Fourth Proportional to 509,919,447.40, 764,879,171.10 and 203,431,517.80
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Solution
The fourth proportional to 509,919,447.40, 764,879,171.10 and 203,431,517.80 is: 305,147,276.70
Step by Step Solution
- Step 1: Write the proportion equation
509,919,447.40 : 764,879,171.10 = 203,431,517.80 : x - Step 2: Convert to fraction form
509,919,447.40/764,879,171.10 = 203,431,517.80/x - Step 3: Cross multiply
509,919,447.40x = 764,879,171.10 × 203,431,517.80 - Step 4: Simplify right side
509,919,447.40x = 155,600,530,710,478,912 - Step 5: Solve for x
x = 155,600,530,710,478,912/509,919,447.40 - Step 6: Final answer
x = 305,147,276.70
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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.