Finding the Fourth Proportional to 8,321,325.80, 12,481,988.70 and 5,486,973.80
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Solution
The fourth proportional to 8,321,325.80, 12,481,988.70 and 5,486,973.80 is: 8,230,460.70
Step by Step Solution
- Step 1: Write the proportion equation
8,321,325.80 : 12,481,988.70 = 5,486,973.80 : x - Step 2: Convert to fraction form
8,321,325.80/12,481,988.70 = 5,486,973.80/x - Step 3: Cross multiply
8,321,325.80x = 12,481,988.70 × 5,486,973.80 - Step 4: Simplify right side
8,321,325.80x = 68,488,344,968,796.05 - Step 5: Solve for x
x = 68,488,344,968,796.05/8,321,325.80 - Step 6: Final answer
x = 8,230,460.70
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Double scale
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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.