Finding the Fourth Proportional to 990,874.74, 1,486,137.14 and 391,636.74
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Solution
The fourth proportional to 990,874.74, 1,486,137.14 and 391,636.74 is: 587,385.95
Step by Step Solution
- Step 1: Write the proportion equation
990,874.74 : 1,486,137.14 = 391,636.74 : x - Step 2: Convert to fraction form
990,874.74/1,486,137.14 = 391,636.74/x - Step 3: Cross multiply
990,874.74x = 1,486,137.14 × 391,636.74 - Step 4: Simplify right side
990,874.74x = 582,025,904,702.52 - Step 5: Solve for x
x = 582,025,904,702.52/990,874.74 - Step 6: Final answer
x = 587,385.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.