Finding the Fourth Proportional to 1,987,972.31, 2,743,329.75 and 1,214,896.49
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Solution
The fourth proportional to 1,987,972.31, 2,743,329.75 and 1,214,896.49 is: 1,676,513.14
Step by Step Solution
- Step 1: Write the proportion equation
1,987,972.31 : 2,743,329.75 = 1,214,896.49 : x - Step 2: Convert to fraction form
1,987,972.31/2,743,329.75 = 1,214,896.49/x - Step 3: Cross multiply
1,987,972.31x = 2,743,329.75 × 1,214,896.49 - Step 4: Simplify right side
1,987,972.31x = 3,332,861,686,490.04 - Step 5: Solve for x
x = 3,332,861,686,490.04/1,987,972.31 - Step 6: Final answer
x = 1,676,513.14
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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.