Finding the Fourth Proportional to 1,855,771,516.38, 2,781,818,571.60 and 871,435,998.12
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Solution
The fourth proportional to 1,855,771,516.38, 2,781,818,571.60 and 871,435,998.12 is: 1,306,290,576.26
Step by Step Solution
- Step 1: Write the proportion equation
1,855,771,516.38 : 2,781,818,571.60 = 871,435,998.12 : x - Step 2: Convert to fraction form
1,855,771,516.38/2,781,818,571.60 = 871,435,998.12/x - Step 3: Cross multiply
1,855,771,516.38x = 2,781,818,571.60 × 871,435,998.12 - Step 4: Simplify right side
1,855,771,516.38x = 2,424,176,843,530,998,784 - Step 5: Solve for x
x = 2,424,176,843,530,998,784/1,855,771,516.38 - Step 6: Final answer
x = 1,306,290,576.26
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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.