Finding the Fourth Proportional to 521,986.26, 720,306.92 and 307,084.80
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Solution
The fourth proportional to 521,986.26, 720,306.92 and 307,084.80 is: 423,756.95
Step by Step Solution
- Step 1: Write the proportion equation
521,986.26 : 720,306.92 = 307,084.80 : x - Step 2: Convert to fraction form
521,986.26/720,306.92 = 307,084.80/x - Step 3: Cross multiply
521,986.26x = 720,306.92 × 307,084.80 - Step 4: Simplify right side
521,986.26x = 221,195,306,466.82 - Step 5: Solve for x
x = 221,195,306,466.82/521,986.26 - Step 6: Final answer
x = 423,756.95
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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.