Finding the Fourth Proportional to 861,391.94, 1,292,292.39 and 270,415.94
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Solution
The fourth proportional to 861,391.94, 1,292,292.39 and 270,415.94 is: 405,688.10
Step by Step Solution
- Step 1: Write the proportion equation
861,391.94 : 1,292,292.39 = 270,415.94 : x - Step 2: Convert to fraction form
861,391.94/1,292,292.39 = 270,415.94/x - Step 3: Cross multiply
861,391.94x = 1,292,292.39 × 270,415.94 - Step 4: Simplify right side
861,391.94x = 349,456,461,396.70 - Step 5: Solve for x
x = 349,456,461,396.70/861,391.94 - Step 6: Final answer
x = 405,688.10
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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.