Finding the Fourth Proportional to 1,431,391.50, 1,975,324.37 and 819,553.65
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Solution
The fourth proportional to 1,431,391.50, 1,975,324.37 and 819,553.65 is: 1,130,986.38
Step by Step Solution
- Step 1: Write the proportion equation
1,431,391.50 : 1,975,324.37 = 819,553.65 : x - Step 2: Convert to fraction form
1,431,391.50/1,975,324.37 = 819,553.65/x - Step 3: Cross multiply
1,431,391.50x = 1,975,324.37 × 819,553.65 - Step 4: Simplify right side
1,431,391.50x = 1,618,884,290,472.21 - Step 5: Solve for x
x = 1,618,884,290,472.21/1,431,391.50 - Step 6: Final answer
x = 1,130,986.38
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.