Finding the Fourth Proportional to 743,480.11, 1,025,969.11 and 421,183.63
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Solution
The fourth proportional to 743,480.11, 1,025,969.11 and 421,183.63 is: 581,214.46
Step by Step Solution
- Step 1: Write the proportion equation
743,480.11 : 1,025,969.11 = 421,183.63 : x - Step 2: Convert to fraction form
743,480.11/1,025,969.11 = 421,183.63/x - Step 3: Cross multiply
743,480.11x = 1,025,969.11 × 421,183.63 - Step 4: Simplify right side
743,480.11x = 432,121,394,017.67 - Step 5: Solve for x
x = 432,121,394,017.67/743,480.11 - Step 6: Final answer
x = 581,214.46
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1.5x scale
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.