Finding the Fourth Proportional to 18,720,205.62, 28,080,308.44 and 4,536,781.62
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Solution
The fourth proportional to 18,720,205.62, 28,080,308.44 and 4,536,781.62 is: 6,805,172.43
Step by Step Solution
- Step 1: Write the proportion equation
18,720,205.62 : 28,080,308.44 = 4,536,781.62 : x - Step 2: Convert to fraction form
18,720,205.62/28,080,308.44 = 4,536,781.62/x - Step 3: Cross multiply
18,720,205.62x = 28,080,308.44 × 4,536,781.62 - Step 4: Simplify right side
18,720,205.62x = 127,394,227,214,522.88 - Step 5: Solve for x
x = 127,394,227,214,522.88/18,720,205.62 - Step 6: Final answer
x = 6,805,172.43
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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.