Finding the Fourth Proportional to 2,165,167.64, 2,987,909.34 and 1,198,299.80
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Solution
The fourth proportional to 2,165,167.64, 2,987,909.34 and 1,198,299.80 is: 1,653,641.55
Step by Step Solution
- Step 1: Write the proportion equation
2,165,167.64 : 2,987,909.34 = 1,198,299.80 : x - Step 2: Convert to fraction form
2,165,167.64/2,987,909.34 = 1,198,299.80/x - Step 3: Cross multiply
2,165,167.64x = 2,987,909.34 × 1,198,299.80 - Step 4: Simplify right side
2,165,167.64x = 3,580,411,164,540.13 - Step 5: Solve for x
x = 3,580,411,164,540.13/2,165,167.64 - Step 6: Final answer
x = 1,653,641.55
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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.