Finding the Fourth Proportional to 1,276,804.80, 1,915,207.20 and 1,119,211.20
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Solution
The fourth proportional to 1,276,804.80, 1,915,207.20 and 1,119,211.20 is: 1,678,816.80
Step by Step Solution
- Step 1: Write the proportion equation
1,276,804.80 : 1,915,207.20 = 1,119,211.20 : x - Step 2: Convert to fraction form
1,276,804.80/1,915,207.20 = 1,119,211.20/x - Step 3: Cross multiply
1,276,804.80x = 1,915,207.20 × 1,119,211.20 - Step 4: Simplify right side
1,276,804.80x = 2,143,521,348,560.64 - Step 5: Solve for x
x = 2,143,521,348,560.64/1,276,804.80 - Step 6: Final answer
x = 1,678,816.80
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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.