Finding the Fourth Proportional to 665,534.36, 918,625.83 and 393,696.75
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Solution
The fourth proportional to 665,534.36, 918,625.83 and 393,696.75 is: 543,412.97
Step by Step Solution
- Step 1: Write the proportion equation
665,534.36 : 918,625.83 = 393,696.75 : x - Step 2: Convert to fraction form
665,534.36/918,625.83 = 393,696.75/x - Step 3: Cross multiply
665,534.36x = 918,625.83 × 393,696.75 - Step 4: Simplify right side
665,534.36x = 361,660,003,737.05 - Step 5: Solve for x
x = 361,660,003,737.05/665,534.36 - Step 6: Final answer
x = 543,412.97
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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.