Finding the Fourth Proportional to 2,122,907.28, 2,929,582.86 and 1,205,128.41
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Solution
The fourth proportional to 2,122,907.28, 2,929,582.86 and 1,205,128.41 is: 1,663,060.64
Step by Step Solution
- Step 1: Write the proportion equation
2,122,907.28 : 2,929,582.86 = 1,205,128.41 : x - Step 2: Convert to fraction form
2,122,907.28/2,929,582.86 = 1,205,128.41/x - Step 3: Cross multiply
2,122,907.28x = 2,929,582.86 × 1,205,128.41 - Step 4: Simplify right side
2,122,907.28x = 3,530,523,534,035.05 - Step 5: Solve for x
x = 3,530,523,534,035.05/2,122,907.28 - Step 6: Final answer
x = 1,663,060.64
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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.