Finding the Fourth Proportional to 3,942,289.60, 5,440,355.04 and 2,131,449.28
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Solution
The fourth proportional to 3,942,289.60, 5,440,355.04 and 2,131,449.28 is: 2,941,397.52
Step by Step Solution
- Step 1: Write the proportion equation
3,942,289.60 : 5,440,355.04 = 2,131,449.28 : x - Step 2: Convert to fraction form
3,942,289.60/5,440,355.04 = 2,131,449.28/x - Step 3: Cross multiply
3,942,289.60x = 5,440,355.04 × 2,131,449.28 - Step 4: Simplify right side
3,942,289.60x = 11,595,840,832,952.37 - Step 5: Solve for x
x = 11,595,840,832,952.37/3,942,289.60 - Step 6: Final answer
x = 2,941,397.52
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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.