Finding the Fourth Proportional to 513,689.40, 770,534.10 and 345,727.80
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Solution
The fourth proportional to 513,689.40, 770,534.10 and 345,727.80 is: 518,591.70
Step by Step Solution
- Step 1: Write the proportion equation
513,689.40 : 770,534.10 = 345,727.80 : x - Step 2: Convert to fraction form
513,689.40/770,534.10 = 345,727.80/x - Step 3: Cross multiply
513,689.40x = 770,534.10 × 345,727.80 - Step 4: Simplify right side
513,689.40x = 266,395,059,217.98 - Step 5: Solve for x
x = 266,395,059,217.98/513,689.40 - Step 6: Final answer
x = 518,591.70
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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.