Finding the Fourth Proportional to 515,059.40, 772,589.10 and 409,305.80
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Solution
The fourth proportional to 515,059.40, 772,589.10 and 409,305.80 is: 613,958.70
Step by Step Solution
- Step 1: Write the proportion equation
515,059.40 : 772,589.10 = 409,305.80 : x - Step 2: Convert to fraction form
515,059.40/772,589.10 = 409,305.80/x - Step 3: Cross multiply
515,059.40x = 772,589.10 × 409,305.80 - Step 4: Simplify right side
515,059.40x = 316,225,199,646.78 - Step 5: Solve for x
x = 316,225,199,646.78/515,059.40 - Step 6: Final answer
x = 613,958.70
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Similar ratio
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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.