Finding the Fourth Proportional to 1,131,808.68, 1,561,105.10 and 768,602.05
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Solution
The fourth proportional to 1,131,808.68, 1,561,105.10 and 768,602.05 is: 1,060,133.75
Step by Step Solution
- Step 1: Write the proportion equation
1,131,808.68 : 1,561,105.10 = 768,602.05 : x - Step 2: Convert to fraction form
1,131,808.68/1,561,105.10 = 768,602.05/x - Step 3: Cross multiply
1,131,808.68x = 1,561,105.10 × 768,602.05 - Step 4: Simplify right side
1,131,808.68x = 1,199,868,578,144.20 - Step 5: Solve for x
x = 1,199,868,578,144.20/1,131,808.68 - Step 6: Final answer
x = 1,060,133.75
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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.