Finding the Fourth Proportional to 818,615.12, 1,228,088.76 and 257,519.12
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Solution
The fourth proportional to 818,615.12, 1,228,088.76 and 257,519.12 is: 386,330.93
Step by Step Solution
- Step 1: Write the proportion equation
818,615.12 : 1,228,088.76 = 257,519.12 : x - Step 2: Convert to fraction form
818,615.12/1,228,088.76 = 257,519.12/x - Step 3: Cross multiply
818,615.12x = 1,228,088.76 × 257,519.12 - Step 4: Simplify right side
818,615.12x = 316,256,336,757.09 - Step 5: Solve for x
x = 316,256,336,757.09/818,615.12 - Step 6: Final answer
x = 386,330.93
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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.