Finding the Fourth Proportional to 1,313,660.10, 1,970,490.15 and 1,207,371.90
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Solution
The fourth proportional to 1,313,660.10, 1,970,490.15 and 1,207,371.90 is: 1,811,057.85
Step by Step Solution
- Step 1: Write the proportion equation
1,313,660.10 : 1,970,490.15 = 1,207,371.90 : x - Step 2: Convert to fraction form
1,313,660.10/1,970,490.15 = 1,207,371.90/x - Step 3: Cross multiply
1,313,660.10x = 1,970,490.15 × 1,207,371.90 - Step 4: Simplify right side
1,313,660.10x = 2,379,114,436,336.78 - Step 5: Solve for x
x = 2,379,114,436,336.78/1,313,660.10 - Step 6: Final answer
x = 1,811,057.85
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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.