Finding the Fourth Proportional to 428,879.28, 643,378.44 and 249,049.68
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Solution
The fourth proportional to 428,879.28, 643,378.44 and 249,049.68 is: 373,609.08
Step by Step Solution
- Step 1: Write the proportion equation
428,879.28 : 643,378.44 = 249,049.68 : x - Step 2: Convert to fraction form
428,879.28/643,378.44 = 249,049.68/x - Step 3: Cross multiply
428,879.28x = 643,378.44 × 249,049.68 - Step 4: Simplify right side
428,879.28x = 160,233,194,600.90 - Step 5: Solve for x
x = 160,233,194,600.90/428,879.28 - Step 6: Final answer
x = 373,609.08
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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.