Finding the Fourth Proportional to 1,276,408.41, 1,914,840.30 and 423,531.20
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Solution
The fourth proportional to 1,276,408.41, 1,914,840.30 and 423,531.20 is: 635,372.34
Step by Step Solution
- Step 1: Write the proportion equation
1,276,408.41 : 1,914,840.30 = 423,531.20 : x - Step 2: Convert to fraction form
1,276,408.41/1,914,840.30 = 423,531.20/x - Step 3: Cross multiply
1,276,408.41x = 1,914,840.30 × 423,531.20 - Step 4: Simplify right side
1,276,408.41x = 810,994,600,493.16 - Step 5: Solve for x
x = 810,994,600,493.16/1,276,408.41 - Step 6: Final answer
x = 635,372.34
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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.