Finding the Fourth Proportional to 2,128,194.60, 3,188,144.70 and 1,284,239.40
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Solution
The fourth proportional to 2,128,194.60, 3,188,144.70 and 1,284,239.40 is: 1,923,856.51
Step by Step Solution
- Step 1: Write the proportion equation
2,128,194.60 : 3,188,144.70 = 1,284,239.40 : x - Step 2: Convert to fraction form
2,128,194.60/3,188,144.70 = 1,284,239.40/x - Step 3: Cross multiply
2,128,194.60x = 3,188,144.70 × 1,284,239.40 - Step 4: Simplify right side
2,128,194.60x = 4,094,341,036,641.18 - Step 5: Solve for x
x = 4,094,341,036,641.18/2,128,194.60 - Step 6: Final answer
x = 1,923,856.51
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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.