Finding the Fourth Proportional to 826,645.80, 1,239,968.70 and 721,669.80
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Solution
The fourth proportional to 826,645.80, 1,239,968.70 and 721,669.80 is: 1,082,504.70
Step by Step Solution
- Step 1: Write the proportion equation
826,645.80 : 1,239,968.70 = 721,669.80 : x - Step 2: Convert to fraction form
826,645.80/1,239,968.70 = 721,669.80/x - Step 3: Cross multiply
826,645.80x = 1,239,968.70 × 721,669.80 - Step 4: Simplify right side
826,645.80x = 894,847,963,735.26 - Step 5: Solve for x
x = 894,847,963,735.26/826,645.80 - Step 6: Final answer
x = 1,082,504.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.