Finding the Fourth Proportional to 812,354.12, 1,121,083.71 and 449,777.97
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Solution
The fourth proportional to 812,354.12, 1,121,083.71 and 449,777.97 is: 620,712.99
Step by Step Solution
- Step 1: Write the proportion equation
812,354.12 : 1,121,083.71 = 449,777.97 : x - Step 2: Convert to fraction form
812,354.12/1,121,083.71 = 449,777.97/x - Step 3: Cross multiply
812,354.12x = 1,121,083.71 × 449,777.97 - Step 4: Simplify right side
812,354.12x = 504,238,755,283.87 - Step 5: Solve for x
x = 504,238,755,283.87/812,354.12 - Step 6: Final answer
x = 620,712.99
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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.