Finding the Fourth Proportional to 612,149.76, 844,755.12 and 340,214.40
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Solution
The fourth proportional to 612,149.76, 844,755.12 and 340,214.40 is: 469,489.45
Step by Step Solution
- Step 1: Write the proportion equation
612,149.76 : 844,755.12 = 340,214.40 : x - Step 2: Convert to fraction form
612,149.76/844,755.12 = 340,214.40/x - Step 3: Cross multiply
612,149.76x = 844,755.12 × 340,214.40 - Step 4: Simplify right side
612,149.76x = 287,397,856,297.73 - Step 5: Solve for x
x = 287,397,856,297.73/612,149.76 - Step 6: Final answer
x = 469,489.45
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1.5x scale
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.