Finding the Fourth Proportional to 1,378,394.19, 1,901,905.25 and 805,323.65
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Solution
The fourth proportional to 1,378,394.19, 1,901,905.25 and 805,323.65 is: 1,111,183.78
Step by Step Solution
- Step 1: Write the proportion equation
1,378,394.19 : 1,901,905.25 = 805,323.65 : x - Step 2: Convert to fraction form
1,378,394.19/1,901,905.25 = 805,323.65/x - Step 3: Cross multiply
1,378,394.19x = 1,901,905.25 × 805,323.65 - Step 4: Simplify right side
1,378,394.19x = 1,531,649,264,348.02 - Step 5: Solve for x
x = 1,531,649,264,348.02/1,378,394.19 - Step 6: Final answer
x = 1,111,183.78
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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.