Finding the Fourth Proportional to 3,388,656.12, 4,676,402.55 and 1,860,905.40
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Solution
The fourth proportional to 3,388,656.12, 4,676,402.55 and 1,860,905.40 is: 2,568,080.81
Step by Step Solution
- Step 1: Write the proportion equation
3,388,656.12 : 4,676,402.55 = 1,860,905.40 : x - Step 2: Convert to fraction form
3,388,656.12/4,676,402.55 = 1,860,905.40/x - Step 3: Cross multiply
3,388,656.12x = 4,676,402.55 × 1,860,905.40 - Step 4: Simplify right side
3,388,656.12x = 8,702,342,757,868.77 - Step 5: Solve for x
x = 8,702,342,757,868.77/3,388,656.12 - Step 6: Final answer
x = 2,568,080.81
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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.