Finding the Fourth Proportional to 1,819,181,723.70, 2,728,772,847.45 and 438,996,236.70
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Solution
The fourth proportional to 1,819,181,723.70, 2,728,772,847.45 and 438,996,236.70 is: 658,494,418.25
Step by Step Solution
- Step 1: Write the proportion equation
1,819,181,723.70 : 2,728,772,847.45 = 438,996,236.70 : x - Step 2: Convert to fraction form
1,819,181,723.70/2,728,772,847.45 = 438,996,236.70/x - Step 3: Cross multiply
1,819,181,723.70x = 2,728,772,847.45 × 438,996,236.70 - Step 4: Simplify right side
1,819,181,723.70x = 1,197,921,010,839,693,056 - Step 5: Solve for x
x = 1,197,921,010,839,693,056/1,819,181,723.70 - Step 6: Final answer
x = 658,494,418.25
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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.