Finding the Fourth Proportional to 878,778.57, 1,212,638.97 and 511,323.69
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Solution
The fourth proportional to 878,778.57, 1,212,638.97 and 511,323.69 is: 705,582.79
Step by Step Solution
- Step 1: Write the proportion equation
878,778.57 : 1,212,638.97 = 511,323.69 : x - Step 2: Convert to fraction form
878,778.57/1,212,638.97 = 511,323.69/x - Step 3: Cross multiply
878,778.57x = 1,212,638.97 × 511,323.69 - Step 4: Simplify right side
878,778.57x = 620,051,032,778.20 - Step 5: Solve for x
x = 620,051,032,778.20/878,778.57 - Step 6: Final answer
x = 705,582.79
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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.