Finding the Fourth Proportional to 878,271.12, 1,317,406.68 and 213,423.12
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Solution
The fourth proportional to 878,271.12, 1,317,406.68 and 213,423.12 is: 320,134.68
Step by Step Solution
- Step 1: Write the proportion equation
878,271.12 : 1,317,406.68 = 213,423.12 : x - Step 2: Convert to fraction form
878,271.12/1,317,406.68 = 213,423.12/x - Step 3: Cross multiply
878,271.12x = 1,317,406.68 × 213,423.12 - Step 4: Simplify right side
878,271.12x = 281,165,043,954.44 - Step 5: Solve for x
x = 281,165,043,954.44/878,271.12 - Step 6: Final answer
x = 320,134.68
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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.