Finding the Fourth Proportional to 1,348,339.11, 2,021,726.21 and 638,361.15
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Solution
The fourth proportional to 1,348,339.11, 2,021,726.21 and 638,361.15 is: 957,171.28
Step by Step Solution
- Step 1: Write the proportion equation
1,348,339.11 : 2,021,726.21 = 638,361.15 : x - Step 2: Convert to fraction form
1,348,339.11/2,021,726.21 = 638,361.15/x - Step 3: Cross multiply
1,348,339.11x = 2,021,726.21 × 638,361.15 - Step 4: Simplify right side
1,348,339.11x = 1,290,591,465,208.94 - Step 5: Solve for x
x = 1,290,591,465,208.94/1,348,339.11 - Step 6: Final answer
x = 957,171.28
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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.