Finding the Fourth Proportional to 3,858,212.18, 5,324,572.15 and 2,139,332.70
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Solution
The fourth proportional to 3,858,212.18, 5,324,572.15 and 2,139,332.70 is: 2,952,411.84
Step by Step Solution
- Step 1: Write the proportion equation
3,858,212.18 : 5,324,572.15 = 2,139,332.70 : x - Step 2: Convert to fraction form
3,858,212.18/5,324,572.15 = 2,139,332.70/x - Step 3: Cross multiply
3,858,212.18x = 5,324,572.15 × 2,139,332.70 - Step 4: Simplify right side
3,858,212.18x = 11,391,031,314,004.31 - Step 5: Solve for x
x = 11,391,031,314,004.31/3,858,212.18 - Step 6: Final answer
x = 2,952,411.84
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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.