Finding the Fourth Proportional to 810,402.99, 1,215,656.33 and 311,766.99
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Solution
The fourth proportional to 810,402.99, 1,215,656.33 and 311,766.99 is: 467,670.43
Step by Step Solution
- Step 1: Write the proportion equation
810,402.99 : 1,215,656.33 = 311,766.99 : x - Step 2: Convert to fraction form
810,402.99/1,215,656.33 = 311,766.99/x - Step 3: Cross multiply
810,402.99x = 1,215,656.33 × 311,766.99 - Step 4: Simplify right side
810,402.99x = 379,001,513,319.71 - Step 5: Solve for x
x = 379,001,513,319.71/810,402.99 - Step 6: Final answer
x = 467,670.43
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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.