Finding the Fourth Proportional to 1,190,405.12, 1,642,503.49 and 707,133.20
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Solution
The fourth proportional to 1,190,405.12, 1,642,503.49 and 707,133.20 is: 975,691.99
Step by Step Solution
- Step 1: Write the proportion equation
1,190,405.12 : 1,642,503.49 = 707,133.20 : x - Step 2: Convert to fraction form
1,190,405.12/1,642,503.49 = 707,133.20/x - Step 3: Cross multiply
1,190,405.12x = 1,642,503.49 × 707,133.20 - Step 4: Simplify right side
1,190,405.12x = 1,161,468,738,914.52 - Step 5: Solve for x
x = 1,161,468,738,914.52/1,190,405.12 - Step 6: Final answer
x = 975,691.99
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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.