Finding the Fourth Proportional to 3,927,937.20, 5,419,919.79 and 2,208,955.20
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Solution
The fourth proportional to 3,927,937.20, 5,419,919.79 and 2,208,955.20 is: 3,048,001.89
Step by Step Solution
- Step 1: Write the proportion equation
3,927,937.20 : 5,419,919.79 = 2,208,955.20 : x - Step 2: Convert to fraction form
3,927,937.20/5,419,919.79 = 2,208,955.20/x - Step 3: Cross multiply
3,927,937.20x = 5,419,919.79 × 2,208,955.20 - Step 4: Simplify right side
3,927,937.20x = 11,972,360,003,703.41 - Step 5: Solve for x
x = 11,972,360,003,703.41/3,927,937.20 - Step 6: Final answer
x = 3,048,001.89
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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.