Finding the Fourth Proportional to 1,216,319.82, 1,678,242.96 and 726,194.14
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Solution
The fourth proportional to 1,216,319.82, 1,678,242.96 and 726,194.14 is: 1,001,981.70
Step by Step Solution
- Step 1: Write the proportion equation
1,216,319.82 : 1,678,242.96 = 726,194.14 : x - Step 2: Convert to fraction form
1,216,319.82/1,678,242.96 = 726,194.14/x - Step 3: Cross multiply
1,216,319.82x = 1,678,242.96 × 726,194.14 - Step 4: Simplify right side
1,216,319.82x = 1,218,730,203,048.25 - Step 5: Solve for x
x = 1,218,730,203,048.25/1,216,319.82 - Step 6: Final answer
x = 1,001,981.70
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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.