Finding the Fourth Proportional to 878,637.20, 1,318,312.92 and 317,716.88
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Solution
The fourth proportional to 878,637.20, 1,318,312.92 and 317,716.88 is: 476,704.46
Step by Step Solution
- Step 1: Write the proportion equation
878,637.20 : 1,318,312.92 = 317,716.88 : x - Step 2: Convert to fraction form
878,637.20/1,318,312.92 = 317,716.88/x - Step 3: Cross multiply
878,637.20x = 1,318,312.92 × 317,716.88 - Step 4: Simplify right side
878,637.20x = 418,850,267,806.09 - Step 5: Solve for x
x = 418,850,267,806.09/878,637.20 - Step 6: Final answer
x = 476,704.46
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1.5x scale
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.