Finding the Fourth Proportional to 2,128,265.99, 3,192,309.67 and 990,636.98
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Solution
The fourth proportional to 2,128,265.99, 3,192,309.67 and 990,636.98 is: 1,485,913.90
Step by Step Solution
- Step 1: Write the proportion equation
2,128,265.99 : 3,192,309.67 = 990,636.98 : x - Step 2: Convert to fraction form
2,128,265.99/3,192,309.67 = 990,636.98/x - Step 3: Cross multiply
2,128,265.99x = 3,192,309.67 × 990,636.98 - Step 4: Simplify right side
2,128,265.99x = 3,162,420,010,713.60 - Step 5: Solve for x
x = 3,162,420,010,713.60/2,128,265.99 - Step 6: Final answer
x = 1,485,913.90
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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.