Finding the Fourth Proportional to 1,212,581.05, 1,818,371.13 and 413,926.99
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Solution
The fourth proportional to 1,212,581.05, 1,818,371.13 and 413,926.99 is: 620,719.65
Step by Step Solution
- Step 1: Write the proportion equation
1,212,581.05 : 1,818,371.13 = 413,926.99 : x - Step 2: Convert to fraction form
1,212,581.05/1,818,371.13 = 413,926.99/x - Step 3: Cross multiply
1,212,581.05x = 1,818,371.13 × 413,926.99 - Step 4: Simplify right side
1,212,581.05x = 752,672,888,543.80 - Step 5: Solve for x
x = 752,672,888,543.80/1,212,581.05 - Step 6: Final answer
x = 620,719.65
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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.