Finding the Fourth Proportional to 508,739.20, 763,108.80 and 479,708.80
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Solution
The fourth proportional to 508,739.20, 763,108.80 and 479,708.80 is: 719,563.20
Step by Step Solution
- Step 1: Write the proportion equation
508,739.20 : 763,108.80 = 479,708.80 : x - Step 2: Convert to fraction form
508,739.20/763,108.80 = 479,708.80/x - Step 3: Cross multiply
508,739.20x = 763,108.80 × 479,708.80 - Step 4: Simplify right side
508,739.20x = 366,070,006,717.44 - Step 5: Solve for x
x = 366,070,006,717.44/508,739.20 - Step 6: Final answer
x = 719,563.20
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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.