Finding the Fourth Proportional to 3,928,261.48, 5,420,947.44 and 2,209,381.54
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Solution
The fourth proportional to 3,928,261.48, 5,420,947.44 and 2,209,381.54 is: 3,048,916.49
Step by Step Solution
- Step 1: Write the proportion equation
3,928,261.48 : 5,420,947.44 = 2,209,381.54 : x - Step 2: Convert to fraction form
3,928,261.48/5,420,947.44 = 2,209,381.54/x - Step 3: Cross multiply
3,928,261.48x = 5,420,947.44 × 2,209,381.54 - Step 4: Simplify right side
3,928,261.48x = 11,976,941,203,246.26 - Step 5: Solve for x
x = 11,976,941,203,246.26/3,928,261.48 - Step 6: Final answer
x = 3,048,916.49
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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.