Finding the Fourth Proportional to 1,188,316.05, 1,782,998.96 and 479,728.05
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Solution
The fourth proportional to 1,188,316.05, 1,782,998.96 and 479,728.05 is: 719,803.97
Step by Step Solution
- Step 1: Write the proportion equation
1,188,316.05 : 1,782,998.96 = 479,728.05 : x - Step 2: Convert to fraction form
1,188,316.05/1,782,998.96 = 479,728.05/x - Step 3: Cross multiply
1,188,316.05x = 1,782,998.96 × 479,728.05 - Step 4: Simplify right side
1,188,316.05x = 855,354,611,834.19 - Step 5: Solve for x
x = 855,354,611,834.19/1,188,316.05 - Step 6: Final answer
x = 719,803.97
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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.