Finding the Fourth Proportional to 755,631.19, 1,042,691.76 and 428,840.14
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Solution
The fourth proportional to 755,631.19, 1,042,691.76 and 428,840.14 is: 591,754.40
Step by Step Solution
- Step 1: Write the proportion equation
755,631.19 : 1,042,691.76 = 428,840.14 : x - Step 2: Convert to fraction form
755,631.19/1,042,691.76 = 428,840.14/x - Step 3: Cross multiply
755,631.19x = 1,042,691.76 × 428,840.14 - Step 4: Simplify right side
755,631.19x = 447,148,080,335.25 - Step 5: Solve for x
x = 447,148,080,335.25/755,631.19 - Step 6: Final answer
x = 591,754.40
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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.