Finding the Fourth Proportional to 1,438,583.09, 2,157,874.02 and 427,700.66
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Solution
The fourth proportional to 1,438,583.09, 2,157,874.02 and 427,700.66 is: 641,550.80
Step by Step Solution
- Step 1: Write the proportion equation
1,438,583.09 : 2,157,874.02 = 427,700.66 : x - Step 2: Convert to fraction form
1,438,583.09/2,157,874.02 = 427,700.66/x - Step 3: Cross multiply
1,438,583.09x = 2,157,874.02 × 427,700.66 - Step 4: Simplify right side
1,438,583.09x = 922,924,131,761.48 - Step 5: Solve for x
x = 922,924,131,761.48/1,438,583.09 - Step 6: Final answer
x = 641,550.80
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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.