Finding the Fourth Proportional to 2,168,936.40, 2,993,132.49 and 1,202,129.07
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Solution
The fourth proportional to 2,168,936.40, 2,993,132.49 and 1,202,129.07 is: 1,658,938.26
Step by Step Solution
- Step 1: Write the proportion equation
2,168,936.40 : 2,993,132.49 = 1,202,129.07 : x - Step 2: Convert to fraction form
2,168,936.40/2,993,132.49 = 1,202,129.07/x - Step 3: Cross multiply
2,168,936.40x = 2,993,132.49 × 1,202,129.07 - Step 4: Simplify right side
2,168,936.40x = 3,598,131,576,590.49 - Step 5: Solve for x
x = 3,598,131,576,590.49/2,168,936.40 - Step 6: Final answer
x = 1,658,938.26
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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.