Finding the Fourth Proportional to 7,920,506.87, 10,928,426.05 and 4,482,747.90
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Solution
The fourth proportional to 7,920,506.87, 10,928,426.05 and 4,482,747.90 is: 6,185,131.80
Step by Step Solution
- Step 1: Write the proportion equation
7,920,506.87 : 10,928,426.05 = 4,482,747.90 : x - Step 2: Convert to fraction form
7,920,506.87/10,928,426.05 = 4,482,747.90/x - Step 3: Cross multiply
7,920,506.87x = 10,928,426.05 × 4,482,747.90 - Step 4: Simplify right side
7,920,506.87x = 48,989,378,925,942.80 - Step 5: Solve for x
x = 48,989,378,925,942.80/7,920,506.87 - Step 6: Final answer
x = 6,185,131.80
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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.