Finding the Fourth Proportional to 910,728.36, 1,257,921.09 and 682,307.15
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Solution
The fourth proportional to 910,728.36, 1,257,921.09 and 682,307.15 is: 942,419.92
Step by Step Solution
- Step 1: Write the proportion equation
910,728.36 : 1,257,921.09 = 682,307.15 : x - Step 2: Convert to fraction form
910,728.36/1,257,921.09 = 682,307.15/x - Step 3: Cross multiply
910,728.36x = 1,257,921.09 × 682,307.15 - Step 4: Simplify right side
910,728.36x = 858,288,547,553.19 - Step 5: Solve for x
x = 858,288,547,553.19/910,728.36 - Step 6: Final answer
x = 942,419.92
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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.