Finding the Fourth Proportional to 685,861.36, 946,737.12 and 558,315.52
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Solution
The fourth proportional to 685,861.36, 946,737.12 and 558,315.52 is: 770,677.66
Step by Step Solution
- Step 1: Write the proportion equation
685,861.36 : 946,737.12 = 558,315.52 : x - Step 2: Convert to fraction form
685,861.36/946,737.12 = 558,315.52/x - Step 3: Cross multiply
685,861.36x = 946,737.12 × 558,315.52 - Step 4: Simplify right side
685,861.36x = 528,578,027,456.10 - Step 5: Solve for x
x = 528,578,027,456.10/685,861.36 - Step 6: Final answer
x = 770,677.66
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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.