Finding the Fourth Proportional to 1,640,178.70, 2,261,435.70 and 1,348,771.90
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Solution
The fourth proportional to 1,640,178.70, 2,261,435.70 and 1,348,771.90 is: 1,859,651.59
Step by Step Solution
- Step 1: Write the proportion equation
1,640,178.70 : 2,261,435.70 = 1,348,771.90 : x - Step 2: Convert to fraction form
1,640,178.70/2,261,435.70 = 1,348,771.90/x - Step 3: Cross multiply
1,640,178.70x = 2,261,435.70 × 1,348,771.90 - Step 4: Simplify right side
1,640,178.70x = 3,050,160,925,816.83 - Step 5: Solve for x
x = 3,050,160,925,816.83/1,640,178.70 - Step 6: Final answer
x = 1,859,651.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.