Finding the Fourth Proportional to 1,211,800.15, 1,672,208.13 and 667,905.99
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Solution
The fourth proportional to 1,211,800.15, 1,672,208.13 and 667,905.99 is: 921,668.33
Step by Step Solution
- Step 1: Write the proportion equation
1,211,800.15 : 1,672,208.13 = 667,905.99 : x - Step 2: Convert to fraction form
1,211,800.15/1,672,208.13 = 667,905.99/x - Step 3: Cross multiply
1,211,800.15x = 1,672,208.13 × 667,905.99 - Step 4: Simplify right side
1,211,800.15x = 1,116,877,826,553.70 - Step 5: Solve for x
x = 1,116,877,826,553.70/1,211,800.15 - Step 6: Final answer
x = 921,668.33
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.