Finding the Fourth Proportional to 3,894,992.76, 5,374,990.80 and 2,176,126.20
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Solution
The fourth proportional to 3,894,992.76, 5,374,990.80 and 2,176,126.20 is: 3,002,998.73
Step by Step Solution
- Step 1: Write the proportion equation
3,894,992.76 : 5,374,990.80 = 2,176,126.20 : x - Step 2: Convert to fraction form
3,894,992.76/5,374,990.80 = 2,176,126.20/x - Step 3: Cross multiply
3,894,992.76x = 5,374,990.80 × 2,176,126.20 - Step 4: Simplify right side
3,894,992.76x = 11,696,658,304,638.96 - Step 5: Solve for x
x = 11,696,658,304,638.96/3,894,992.76 - Step 6: Final answer
x = 3,002,998.73
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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.