Finding the Fourth Proportional to 3,894,737.72, 5,374,632.84 and 2,128,566.20
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Solution
The fourth proportional to 3,894,737.72, 5,374,632.84 and 2,128,566.20 is: 2,937,363.85
Step by Step Solution
- Step 1: Write the proportion equation
3,894,737.72 : 5,374,632.84 = 2,128,566.20 : x - Step 2: Convert to fraction form
3,894,737.72/5,374,632.84 = 2,128,566.20/x - Step 3: Cross multiply
3,894,737.72x = 5,374,632.84 × 2,128,566.20 - Step 4: Simplify right side
3,894,737.72x = 11,440,261,800,634.01 - Step 5: Solve for x
x = 11,440,261,800,634.01/3,894,737.72 - Step 6: Final answer
x = 2,937,363.85
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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.