Finding the Fourth Proportional to 1,028,653.97, 1,420,236.05 and 642,058.27
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Solution
The fourth proportional to 1,028,653.97, 1,420,236.05 and 642,058.27 is: 886,473.32
Step by Step Solution
- Step 1: Write the proportion equation
1,028,653.97 : 1,420,236.05 = 642,058.27 : x - Step 2: Convert to fraction form
1,028,653.97/1,420,236.05 = 642,058.27/x - Step 3: Cross multiply
1,028,653.97x = 1,420,236.05 × 642,058.27 - Step 4: Simplify right side
1,028,653.97x = 911,874,294,493.75 - Step 5: Solve for x
x = 911,874,294,493.75/1,028,653.97 - Step 6: Final answer
x = 886,473.32
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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.