Finding the Fourth Proportional to 1,221,230.42, 1,684,194.78 and 762,387.36
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Solution
The fourth proportional to 1,221,230.42, 1,684,194.78 and 762,387.36 is: 1,051,405.85
Step by Step Solution
- Step 1: Write the proportion equation
1,221,230.42 : 1,684,194.78 = 762,387.36 : x - Step 2: Convert to fraction form
1,221,230.42/1,684,194.78 = 762,387.36/x - Step 3: Cross multiply
1,221,230.42x = 1,684,194.78 × 762,387.36 - Step 4: Simplify right side
1,221,230.42x = 1,284,008,812,049.98 - Step 5: Solve for x
x = 1,284,008,812,049.98/1,221,230.42 - Step 6: Final answer
x = 1,051,405.85
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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.