Finding the Fourth Proportional to 1,392,148.80, 2,085,112.80 and 1,143,316.80
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Solution
The fourth proportional to 1,392,148.80, 2,085,112.80 and 1,143,316.80 is: 1,712,420.75
Step by Step Solution
- Step 1: Write the proportion equation
1,392,148.80 : 2,085,112.80 = 1,143,316.80 : x - Step 2: Convert to fraction form
1,392,148.80/2,085,112.80 = 1,143,316.80/x - Step 3: Cross multiply
1,392,148.80x = 2,085,112.80 × 1,143,316.80 - Step 4: Simplify right side
1,392,148.80x = 2,383,944,494,135.04 - Step 5: Solve for x
x = 2,383,944,494,135.04/1,392,148.80 - Step 6: Final answer
x = 1,712,420.75
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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.