Finding the Fourth Proportional to 1,989,738.36, 2,745,059.49 and 1,224,463.32
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Solution
The fourth proportional to 1,989,738.36, 2,745,059.49 and 1,224,463.32 is: 1,689,279.72
Step by Step Solution
- Step 1: Write the proportion equation
1,989,738.36 : 2,745,059.49 = 1,224,463.32 : x - Step 2: Convert to fraction form
1,989,738.36/2,745,059.49 = 1,224,463.32/x - Step 3: Cross multiply
1,989,738.36x = 2,745,059.49 × 1,224,463.32 - Step 4: Simplify right side
1,989,738.36x = 3,361,224,656,722.91 - Step 5: Solve for x
x = 3,361,224,656,722.91/1,989,738.36 - Step 6: Final answer
x = 1,689,279.72
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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.