Finding the Fourth Proportional to 511,811.70, 767,717.55 and 393,713.70
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Solution
The fourth proportional to 511,811.70, 767,717.55 and 393,713.70 is: 590,570.55
Step by Step Solution
- Step 1: Write the proportion equation
511,811.70 : 767,717.55 = 393,713.70 : x - Step 2: Convert to fraction form
511,811.70/767,717.55 = 393,713.70/x - Step 3: Cross multiply
511,811.70x = 767,717.55 × 393,713.70 - Step 4: Simplify right side
511,811.70x = 302,260,917,165.44 - Step 5: Solve for x
x = 302,260,917,165.44/511,811.70 - Step 6: Final answer
x = 590,570.55
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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.