Finding the Fourth Proportional to 3,985,780.14, 5,497,921.71 and 2,840,230.62
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Solution
The fourth proportional to 3,985,780.14, 5,497,921.71 and 2,840,230.62 is: 3,917,768.93
Step by Step Solution
- Step 1: Write the proportion equation
3,985,780.14 : 5,497,921.71 = 2,840,230.62 : x - Step 2: Convert to fraction form
3,985,780.14/5,497,921.71 = 2,840,230.62/x - Step 3: Cross multiply
3,985,780.14x = 5,497,921.71 × 2,840,230.62 - Step 4: Simplify right side
3,985,780.14x = 15,615,365,587,104.76 - Step 5: Solve for x
x = 15,615,365,587,104.76/3,985,780.14 - Step 6: Final answer
x = 3,917,768.93
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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.