Finding the Fourth Proportional to 4,920,478.11, 7,379,875.98 and 1,325,404.31
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Solution
The fourth proportional to 4,920,478.11, 7,379,875.98 and 1,325,404.31 is: 1,987,879.87
Step by Step Solution
- Step 1: Write the proportion equation
4,920,478.11 : 7,379,875.98 = 1,325,404.31 : x - Step 2: Convert to fraction form
4,920,478.11/7,379,875.98 = 1,325,404.31/x - Step 3: Cross multiply
4,920,478.11x = 7,379,875.98 × 1,325,404.31 - Step 4: Simplify right side
4,920,478.11x = 9,781,319,394,258.09 - Step 5: Solve for x
x = 9,781,319,394,258.09/4,920,478.11 - Step 6: Final answer
x = 1,987,879.87
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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.