Finding the Fourth Proportional to 778,977.80, 1,168,466.70 and 280,161.80
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Solution
The fourth proportional to 778,977.80, 1,168,466.70 and 280,161.80 is: 420,242.70
Step by Step Solution
- Step 1: Write the proportion equation
778,977.80 : 1,168,466.70 = 280,161.80 : x - Step 2: Convert to fraction form
778,977.80/1,168,466.70 = 280,161.80/x - Step 3: Cross multiply
778,977.80x = 1,168,466.70 × 280,161.80 - Step 4: Simplify right side
778,977.80x = 327,359,733,912.06 - Step 5: Solve for x
x = 327,359,733,912.06/778,977.80 - Step 6: Final answer
x = 420,242.70
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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.