Finding the Fourth Proportional to 820,318.80, 1,230,478.20 and 708,125.70
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Solution
The fourth proportional to 820,318.80, 1,230,478.20 and 708,125.70 is: 1,062,188.55
Step by Step Solution
- Step 1: Write the proportion equation
820,318.80 : 1,230,478.20 = 708,125.70 : x - Step 2: Convert to fraction form
820,318.80/1,230,478.20 = 708,125.70/x - Step 3: Cross multiply
820,318.80x = 1,230,478.20 × 708,125.70 - Step 4: Simplify right side
820,318.80x = 871,333,236,709.74 - Step 5: Solve for x
x = 871,333,236,709.74/820,318.80 - Step 6: Final answer
x = 1,062,188.55
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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.