Finding the Fourth Proportional to 1,207,418.70, 1,811,128.05 and 787,514.70
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Solution
The fourth proportional to 1,207,418.70, 1,811,128.05 and 787,514.70 is: 1,181,272.05
Step by Step Solution
- Step 1: Write the proportion equation
1,207,418.70 : 1,811,128.05 = 787,514.70 : x - Step 2: Convert to fraction form
1,207,418.70/1,811,128.05 = 787,514.70/x - Step 3: Cross multiply
1,207,418.70x = 1,811,128.05 × 787,514.70 - Step 4: Simplify right side
1,207,418.70x = 1,426,289,962,957.34 - Step 5: Solve for x
x = 1,426,289,962,957.34/1,207,418.70 - Step 6: Final answer
x = 1,181,272.05
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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.