Finding the Fourth Proportional to 1,216,320.26, 1,678,243.56 and 726,194.57
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Solution
The fourth proportional to 1,216,320.26, 1,678,243.56 and 726,194.57 is: 1,001,982.30
Step by Step Solution
- Step 1: Write the proportion equation
1,216,320.26 : 1,678,243.56 = 726,194.57 : x - Step 2: Convert to fraction form
1,216,320.26/1,678,243.56 = 726,194.57/x - Step 3: Cross multiply
1,216,320.26x = 1,678,243.56 × 726,194.57 - Step 4: Simplify right side
1,216,320.26x = 1,218,731,364,605.08 - Step 5: Solve for x
x = 1,218,731,364,605.08/1,216,320.26 - Step 6: Final answer
x = 1,001,982.30
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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.