Finding the Fourth Proportional to 820,776.20, 1,132,553.97 and 458,192.09
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Solution
The fourth proportional to 820,776.20, 1,132,553.97 and 458,192.09 is: 632,239.67
Step by Step Solution
- Step 1: Write the proportion equation
820,776.20 : 1,132,553.97 = 458,192.09 : x - Step 2: Convert to fraction form
820,776.20/1,132,553.97 = 458,192.09/x - Step 3: Cross multiply
820,776.20x = 1,132,553.97 × 458,192.09 - Step 4: Simplify right side
820,776.20x = 518,927,270,552.10 - Step 5: Solve for x
x = 518,927,270,552.10/820,776.20 - Step 6: Final answer
x = 632,239.67
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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.