Finding the Fourth Proportional to 820,721.68, 1,133,108.20 and 629,366.80
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Solution
The fourth proportional to 820,721.68, 1,133,108.20 and 629,366.80 is: 868,919.02
Step by Step Solution
- Step 1: Write the proportion equation
820,721.68 : 1,133,108.20 = 629,366.80 : x - Step 2: Convert to fraction form
820,721.68/1,133,108.20 = 629,366.80/x - Step 3: Cross multiply
820,721.68x = 1,133,108.20 × 629,366.80 - Step 4: Simplify right side
820,721.68x = 713,140,681,887.76 - Step 5: Solve for x
x = 713,140,681,887.76/820,721.68 - Step 6: Final answer
x = 868,919.02
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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.