Finding the Fourth Proportional to 1,639,721.79, 2,262,819.18 and 914,616.48
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Solution
The fourth proportional to 1,639,721.79, 2,262,819.18 and 914,616.48 is: 1,262,172.48
Step by Step Solution
- Step 1: Write the proportion equation
1,639,721.79 : 2,262,819.18 = 914,616.48 : x - Step 2: Convert to fraction form
1,639,721.79/2,262,819.18 = 914,616.48/x - Step 3: Cross multiply
1,639,721.79x = 2,262,819.18 × 914,616.48 - Step 4: Simplify right side
1,639,721.79x = 2,069,611,713,288.09 - Step 5: Solve for x
x = 2,069,611,713,288.09/1,639,721.79 - Step 6: Final answer
x = 1,262,172.48
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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.