Finding the Fourth Proportional to 1,242,378.18, 1,863,608.85 and 343,744.74
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Solution
The fourth proportional to 1,242,378.18, 1,863,608.85 and 343,744.74 is: 515,628.61
Step by Step Solution
- Step 1: Write the proportion equation
1,242,378.18 : 1,863,608.85 = 343,744.74 : x - Step 2: Convert to fraction form
1,242,378.18/1,863,608.85 = 343,744.74/x - Step 3: Cross multiply
1,242,378.18x = 1,863,608.85 × 343,744.74 - Step 4: Simplify right side
1,242,378.18x = 640,605,739,604.95 - Step 5: Solve for x
x = 640,605,739,604.95/1,242,378.18 - Step 6: Final answer
x = 515,628.61
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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.