Finding the Fourth Proportional to 1,992,376.42, 2,749,470.21 and 1,086,958.42
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Solution
The fourth proportional to 1,992,376.42, 2,749,470.21 and 1,086,958.42 is: 1,499,997.57
Step by Step Solution
- Step 1: Write the proportion equation
1,992,376.42 : 2,749,470.21 = 1,086,958.42 : x - Step 2: Convert to fraction form
1,992,376.42/2,749,470.21 = 1,086,958.42/x - Step 3: Cross multiply
1,992,376.42x = 2,749,470.21 × 1,086,958.42 - Step 4: Simplify right side
1,992,376.42x = 2,988,559,795,298.67 - Step 5: Solve for x
x = 2,988,559,795,298.67/1,992,376.42 - Step 6: Final answer
x = 1,499,997.57
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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.