Finding the Fourth Proportional to 3,453,893.84, 4,766,378.09 and 1,905,120.78
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Solution
The fourth proportional to 3,453,893.84, 4,766,378.09 and 1,905,120.78 is: 2,629,069.21
Step by Step Solution
- Step 1: Write the proportion equation
3,453,893.84 : 4,766,378.09 = 1,905,120.78 : x - Step 2: Convert to fraction form
3,453,893.84/4,766,378.09 = 1,905,120.78/x - Step 3: Cross multiply
3,453,893.84x = 4,766,378.09 × 1,905,120.78 - Step 4: Simplify right side
3,453,893.84x = 9,080,525,935,070.11 - Step 5: Solve for x
x = 9,080,525,935,070.11/3,453,893.84 - Step 6: Final answer
x = 2,629,069.21
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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.