Finding the Fourth Proportional to 1,328,839.99, 1,993,550.69 and 430,372.54
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Solution
The fourth proportional to 1,328,839.99, 1,993,550.69 and 430,372.54 is: 645,652.96
Step by Step Solution
- Step 1: Write the proportion equation
1,328,839.99 : 1,993,550.69 = 430,372.54 : x - Step 2: Convert to fraction form
1,328,839.99/1,993,550.69 = 430,372.54/x - Step 3: Cross multiply
1,328,839.99x = 1,993,550.69 × 430,372.54 - Step 4: Simplify right side
1,328,839.99x = 857,969,471,922.19 - Step 5: Solve for x
x = 857,969,471,922.19/1,328,839.99 - Step 6: Final answer
x = 645,652.96
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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.