Finding the Fourth Proportional to 2,128,263.75, 3,192,306.32 and 990,634.74
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Solution
The fourth proportional to 2,128,263.75, 3,192,306.32 and 990,634.74 is: 1,485,910.54
Step by Step Solution
- Step 1: Write the proportion equation
2,128,263.75 : 3,192,306.32 = 990,634.74 : x - Step 2: Convert to fraction form
2,128,263.75/3,192,306.32 = 990,634.74/x - Step 3: Cross multiply
2,128,263.75x = 3,192,306.32 × 990,634.74 - Step 4: Simplify right side
2,128,263.75x = 3,162,409,536,360.38 - Step 5: Solve for x
x = 3,162,409,536,360.38/2,128,263.75 - Step 6: Final answer
x = 1,485,910.54
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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.