Finding the Fourth Proportional to 5,390,309.97, 7,438,589.25 and 2,942,920.95
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Solution
The fourth proportional to 5,390,309.97, 7,438,589.25 and 2,942,920.95 is: 4,061,209.89
Step by Step Solution
- Step 1: Write the proportion equation
5,390,309.97 : 7,438,589.25 = 2,942,920.95 : x - Step 2: Convert to fraction form
5,390,309.97/7,438,589.25 = 2,942,920.95/x - Step 3: Cross multiply
5,390,309.97x = 7,438,589.25 × 2,942,920.95 - Step 4: Simplify right side
5,390,309.97x = 21,891,180,142,269.79 - Step 5: Solve for x
x = 21,891,180,142,269.79/5,390,309.97 - Step 6: Final answer
x = 4,061,209.89
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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.