Finding the Fourth Proportional to 812,339.55, 1,121,069.97 and 449,803.40
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Solution
The fourth proportional to 812,339.55, 1,121,069.97 and 449,803.40 is: 620,751.60
Step by Step Solution
- Step 1: Write the proportion equation
812,339.55 : 1,121,069.97 = 449,803.40 : x - Step 2: Convert to fraction form
812,339.55/1,121,069.97 = 449,803.40/x - Step 3: Cross multiply
812,339.55x = 1,121,069.97 × 449,803.40 - Step 4: Simplify right side
812,339.55x = 504,261,078,538.55 - Step 5: Solve for x
x = 504,261,078,538.55/812,339.55 - Step 6: Final answer
x = 620,751.60
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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.