Finding the Fourth Proportional to 1,372,206.70, 2,056,560.45 and 660,702.70
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Solution
The fourth proportional to 1,372,206.70, 2,056,560.45 and 660,702.70 is: 990,211.64
Step by Step Solution
- Step 1: Write the proportion equation
1,372,206.70 : 2,056,560.45 = 660,702.70 : x - Step 2: Convert to fraction form
1,372,206.70/2,056,560.45 = 660,702.70/x - Step 3: Cross multiply
1,372,206.70x = 2,056,560.45 × 660,702.70 - Step 4: Simplify right side
1,372,206.70x = 1,358,775,042,028.21 - Step 5: Solve for x
x = 1,358,775,042,028.21/1,372,206.70 - Step 6: Final answer
x = 990,211.64
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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.