Finding the Fourth Proportional to 878,367.91, 1,212,137.61 and 475,959.91
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Solution
The fourth proportional to 878,367.91, 1,212,137.61 and 475,959.91 is: 656,819.20
Step by Step Solution
- Step 1: Write the proportion equation
878,367.91 : 1,212,137.61 = 475,959.91 : x - Step 2: Convert to fraction form
878,367.91/1,212,137.61 = 475,959.91/x - Step 3: Cross multiply
878,367.91x = 1,212,137.61 × 475,959.91 - Step 4: Simplify right side
878,367.91x = 576,928,907,763.22 - Step 5: Solve for x
x = 576,928,907,763.22/878,367.91 - Step 6: Final answer
x = 656,819.20
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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.