Finding the Fourth Proportional to 818,625.12, 1,228,103.76 and 257,529.12
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Solution
The fourth proportional to 818,625.12, 1,228,103.76 and 257,529.12 is: 386,345.93
Step by Step Solution
- Step 1: Write the proportion equation
818,625.12 : 1,228,103.76 = 257,529.12 : x - Step 2: Convert to fraction form
818,625.12/1,228,103.76 = 257,529.12/x - Step 3: Cross multiply
818,625.12x = 1,228,103.76 × 257,529.12 - Step 4: Simplify right side
818,625.12x = 316,272,480,581.49 - Step 5: Solve for x
x = 316,272,480,581.49/818,625.12 - Step 6: Final answer
x = 386,345.93
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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.