Finding the Fourth Proportional to 1,128,950.44, 1,557,929.36 and 638,910.88
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Solution
The fourth proportional to 1,128,950.44, 1,557,929.36 and 638,910.88 is: 881,684.42
Step by Step Solution
- Step 1: Write the proportion equation
1,128,950.44 : 1,557,929.36 = 638,910.88 : x - Step 2: Convert to fraction form
1,128,950.44/1,557,929.36 = 638,910.88/x - Step 3: Cross multiply
1,128,950.44x = 1,557,929.36 × 638,910.88 - Step 4: Simplify right side
1,128,950.44x = 995,378,018,375.44 - Step 5: Solve for x
x = 995,378,018,375.44/1,128,950.44 - Step 6: Final answer
x = 881,684.42
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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.