Finding the Fourth Proportional to 658,093,810.25, 987,251,695.36 and 221,290,660.91
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Solution
The fourth proportional to 658,093,810.25, 987,251,695.36 and 221,290,660.91 is: 331,973,309.50
Step by Step Solution
- Step 1: Write the proportion equation
658,093,810.25 : 987,251,695.36 = 221,290,660.91 : x - Step 2: Convert to fraction form
658,093,810.25/987,251,695.36 = 221,290,660.91/x - Step 3: Cross multiply
658,093,810.25x = 987,251,695.36 × 221,290,660.91 - Step 4: Simplify right side
658,093,810.25x = 218,469,580,145,242,880 - Step 5: Solve for x
x = 218,469,580,145,242,880/658,093,810.25 - Step 6: Final answer
x = 331,973,309.50
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1.5x scale
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.