Finding the Fourth Proportional to 990,560.88, 1,485,234.09 and 421,617.98
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Solution
The fourth proportional to 990,560.88, 1,485,234.09 and 421,617.98 is: 632,168.52
Step by Step Solution
- Step 1: Write the proportion equation
990,560.88 : 1,485,234.09 = 421,617.98 : x - Step 2: Convert to fraction form
990,560.88/1,485,234.09 = 421,617.98/x - Step 3: Cross multiply
990,560.88x = 1,485,234.09 × 421,617.98 - Step 4: Simplify right side
990,560.88x = 626,201,400,566.02 - Step 5: Solve for x
x = 626,201,400,566.02/990,560.88 - Step 6: Final answer
x = 632,168.52
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1.5x scale
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.