Finding the Fourth Proportional to 1,216,623.36, 1,678,382.18 and 787,042.02
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Solution
The fourth proportional to 1,216,623.36, 1,678,382.18 and 787,042.02 is: 1,085,756.98
Step by Step Solution
- Step 1: Write the proportion equation
1,216,623.36 : 1,678,382.18 = 787,042.02 : x - Step 2: Convert to fraction form
1,216,623.36/1,678,382.18 = 787,042.02/x - Step 3: Cross multiply
1,216,623.36x = 1,678,382.18 × 787,042.02 - Step 4: Simplify right side
1,216,623.36x = 1,320,957,301,279.20 - Step 5: Solve for x
x = 1,320,957,301,279.20/1,216,623.36 - Step 6: Final answer
x = 1,085,756.98
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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.