Finding the Fourth Proportional to 714,660.98, 986,234.09 and 392,391.95
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Solution
The fourth proportional to 714,660.98, 986,234.09 and 392,391.95 is: 541,501.95
Step by Step Solution
- Step 1: Write the proportion equation
714,660.98 : 986,234.09 = 392,391.95 : x - Step 2: Convert to fraction form
714,660.98/986,234.09 = 392,391.95/x - Step 3: Cross multiply
714,660.98x = 986,234.09 × 392,391.95 - Step 4: Simplify right side
714,660.98x = 386,990,318,235.20 - Step 5: Solve for x
x = 386,990,318,235.20/714,660.98 - Step 6: Final answer
x = 541,501.95
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1.5x scale
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.