Finding the Fourth Proportional to 4,920,479.43, 7,379,877.90 and 1,325,405.60
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Solution
The fourth proportional to 4,920,479.43, 7,379,877.90 and 1,325,405.60 is: 1,987,881.80
Step by Step Solution
- Step 1: Write the proportion equation
4,920,479.43 : 7,379,877.90 = 1,325,405.60 : x - Step 2: Convert to fraction form
4,920,479.43/7,379,877.90 = 1,325,405.60/x - Step 3: Cross multiply
4,920,479.43x = 7,379,877.90 × 1,325,405.60 - Step 4: Simplify right side
4,920,479.43x = 9,781,331,491,721.66 - Step 5: Solve for x
x = 9,781,331,491,721.66/4,920,479.43 - Step 6: Final answer
x = 1,987,881.80
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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.