Finding the Fourth Proportional to 1,338,867.18, 2,008,640.97 and 379,321.74
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Solution
The fourth proportional to 1,338,867.18, 2,008,640.97 and 379,321.74 is: 569,078.99
Step by Step Solution
- Step 1: Write the proportion equation
1,338,867.18 : 2,008,640.97 = 379,321.74 : x - Step 2: Convert to fraction form
1,338,867.18/2,008,640.97 = 379,321.74/x - Step 3: Cross multiply
1,338,867.18x = 2,008,640.97 × 379,321.74 - Step 4: Simplify right side
1,338,867.18x = 761,921,187,775.69 - Step 5: Solve for x
x = 761,921,187,775.69/1,338,867.18 - Step 6: Final answer
x = 569,078.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.