Finding the Fourth Proportional to 642,696.20, 963,122.70 and 472,891.40
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Solution
The fourth proportional to 642,696.20, 963,122.70 and 472,891.40 is: 708,658.99
Step by Step Solution
- Step 1: Write the proportion equation
642,696.20 : 963,122.70 = 472,891.40 : x - Step 2: Convert to fraction form
642,696.20/963,122.70 = 472,891.40/x - Step 3: Cross multiply
642,696.20x = 963,122.70 × 472,891.40 - Step 4: Simplify right side
642,696.20x = 455,452,441,974.78 - Step 5: Solve for x
x = 455,452,441,974.78/642,696.20 - Step 6: Final answer
x = 708,658.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.