Finding the Fourth Proportional to 2,478,193.92, 3,419,966.57 and 1,390,545.94
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Solution
The fourth proportional to 2,478,193.92, 3,419,966.57 and 1,390,545.94 is: 1,918,986.48
Step by Step Solution
- Step 1: Write the proportion equation
2,478,193.92 : 3,419,966.57 = 1,390,545.94 : x - Step 2: Convert to fraction form
2,478,193.92/3,419,966.57 = 1,390,545.94/x - Step 3: Cross multiply
2,478,193.92x = 3,419,966.57 × 1,390,545.94 - Step 4: Simplify right side
2,478,193.92x = 4,755,620,640,561.94 - Step 5: Solve for x
x = 4,755,620,640,561.94/2,478,193.92 - Step 6: Final answer
x = 1,918,986.48
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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.