Finding the Fourth Proportional to 7,449,689.20, 11,171,909.40 and 2,657,534.80
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Solution
The fourth proportional to 7,449,689.20, 11,171,909.40 and 2,657,534.80 is: 3,985,366.00
Step by Step Solution
- Step 1: Write the proportion equation
7,449,689.20 : 11,171,909.40 = 2,657,534.80 : x - Step 2: Convert to fraction form
7,449,689.20/11,171,909.40 = 2,657,534.80/x - Step 3: Cross multiply
7,449,689.20x = 11,171,909.40 × 2,657,534.80 - Step 4: Simplify right side
7,449,689.20x = 29,689,738,012,947.12 - Step 5: Solve for x
x = 29,689,738,012,947.12/7,449,689.20 - Step 6: Final answer
x = 3,985,366.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.