Finding the Fourth Proportional to 2,172,689,247,939.40, 2,998,375,119,071 and 1,197,269,956,363.80
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Solution
The fourth proportional to 2,172,689,247,939.40, 2,998,375,119,071 and 1,197,269,956,363.80 is: 1,652,267,783,520.86
Step by Step Solution
- Step 1: Write the proportion equation
2,172,689,247,939.40 : 2,998,375,119,071 = 1,197,269,956,363.80 : x - Step 2: Convert to fraction form
2,172,689,247,939.40/2,998,375,119,071 = 1,197,269,956,363.80/x - Step 3: Cross multiply
2,172,689,247,939.40x = 2,998,375,119,071 × 1,197,269,956,363.80 - Step 4: Simplify right side
2,172,689,247,939.40x = 3,589,864,447,972,440,167,940,096 - Step 5: Solve for x
x = 3,589,864,447,972,440,167,940,096/2,172,689,247,939.40 - Step 6: Final answer
x = 1,652,267,783,520.86
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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.