Finding the Fourth Proportional to 1,423,990.63, 1,965,103.79 and 779,405.19
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Solution
The fourth proportional to 1,423,990.63, 1,965,103.79 and 779,405.19 is: 1,075,577.36
Step by Step Solution
- Step 1: Write the proportion equation
1,423,990.63 : 1,965,103.79 = 779,405.19 : x - Step 2: Convert to fraction form
1,423,990.63/1,965,103.79 = 779,405.19/x - Step 3: Cross multiply
1,423,990.63x = 1,965,103.79 × 779,405.19 - Step 4: Simplify right side
1,423,990.63x = 1,531,612,085,932.66 - Step 5: Solve for x
x = 1,531,612,085,932.66/1,423,990.63 - Step 6: Final answer
x = 1,075,577.36
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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.