Finding the Fourth Proportional to 3,897,545.49, 5,378,619.87 and 2,178,664.95
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Solution
The fourth proportional to 3,897,545.49, 5,378,619.87 and 2,178,664.95 is: 3,006,561.60
Step by Step Solution
- Step 1: Write the proportion equation
3,897,545.49 : 5,378,619.87 = 2,178,664.95 : x - Step 2: Convert to fraction form
3,897,545.49/5,378,619.87 = 2,178,664.95/x - Step 3: Cross multiply
3,897,545.49x = 5,378,619.87 × 2,178,664.95 - Step 4: Simplify right side
3,897,545.49x = 11,718,210,590,142.56 - Step 5: Solve for x
x = 11,718,210,590,142.56/3,897,545.49 - Step 6: Final answer
x = 3,006,561.60
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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.