Finding the Fourth Proportional to 1,690,331.19, 2,535,589.13 and 428,169.75
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Solution
The fourth proportional to 1,690,331.19, 2,535,589.13 and 428,169.75 is: 642,278.02
Step by Step Solution
- Step 1: Write the proportion equation
1,690,331.19 : 2,535,589.13 = 428,169.75 : x - Step 2: Convert to fraction form
1,690,331.19/2,535,589.13 = 428,169.75/x - Step 3: Cross multiply
1,690,331.19x = 2,535,589.13 × 428,169.75 - Step 4: Simplify right side
1,690,331.19x = 1,085,662,561,753.97 - Step 5: Solve for x
x = 1,085,662,561,753.97/1,690,331.19 - Step 6: Final answer
x = 642,278.02
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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.