Finding the Fourth Proportional to 7,419,430.60, 11,129,145.90 and 3,640,294.60
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Solution
The fourth proportional to 7,419,430.60, 11,129,145.90 and 3,640,294.60 is: 5,460,441.90
Step by Step Solution
- Step 1: Write the proportion equation
7,419,430.60 : 11,129,145.90 = 3,640,294.60 : x - Step 2: Convert to fraction form
7,419,430.60/11,129,145.90 = 3,640,294.60/x - Step 3: Cross multiply
7,419,430.60x = 11,129,145.90 × 3,640,294.60 - Step 4: Simplify right side
7,419,430.60x = 40,513,369,722,382.14 - Step 5: Solve for x
x = 40,513,369,722,382.14/7,419,430.60 - Step 6: Final answer
x = 5,460,441.90
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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.