Finding the Fourth Proportional to 612,485.12, 918,914.18 and 313,175.94
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Solution
The fourth proportional to 612,485.12, 918,914.18 and 313,175.94 is: 469,859.27
Step by Step Solution
- Step 1: Write the proportion equation
612,485.12 : 918,914.18 = 313,175.94 : x - Step 2: Convert to fraction form
612,485.12/918,914.18 = 313,175.94/x - Step 3: Cross multiply
612,485.12x = 918,914.18 × 313,175.94 - Step 4: Simplify right side
612,485.12x = 287,781,810,534.95 - Step 5: Solve for x
x = 287,781,810,534.95/612,485.12 - Step 6: Final answer
x = 469,859.27
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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.