Finding the Fourth Proportional to 8,679,947.40, 13,021,994.70 and 4,188,529.80
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Solution
The fourth proportional to 8,679,947.40, 13,021,994.70 and 4,188,529.80 is: 6,283,795.32
Step by Step Solution
- Step 1: Write the proportion equation
8,679,947.40 : 13,021,994.70 = 4,188,529.80 : x - Step 2: Convert to fraction form
8,679,947.40/13,021,994.70 = 4,188,529.80/x - Step 3: Cross multiply
8,679,947.40x = 13,021,994.70 × 4,188,529.80 - Step 4: Simplify right side
8,679,947.40x = 54,543,012,856,392.05 - Step 5: Solve for x
x = 54,543,012,856,392.05/8,679,947.40 - Step 6: Final answer
x = 6,283,795.32
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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.