Finding the Fourth Proportional to 8,319,025.80, 12,478,538.70 and 4,959,793.80
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Solution
The fourth proportional to 8,319,025.80, 12,478,538.70 and 4,959,793.80 is: 7,439,690.70
Step by Step Solution
- Step 1: Write the proportion equation
8,319,025.80 : 12,478,538.70 = 4,959,793.80 : x - Step 2: Convert to fraction form
8,319,025.80/12,478,538.70 = 4,959,793.80/x - Step 3: Cross multiply
8,319,025.80x = 12,478,538.70 × 4,959,793.80 - Step 4: Simplify right side
8,319,025.80x = 61,890,978,877,320.05 - Step 5: Solve for x
x = 61,890,978,877,320.05/8,319,025.80 - Step 6: Final answer
x = 7,439,690.70
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Similar ratio
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1.5x scale
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.