Finding the Fourth Proportional to 621,265.20, 930,531.84 and 513,426.99
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Solution
The fourth proportional to 621,265.20, 930,531.84 and 513,426.99 is: 769,011.63
Step by Step Solution
- Step 1: Write the proportion equation
621,265.20 : 930,531.84 = 513,426.99 : x - Step 2: Convert to fraction form
621,265.20/930,531.84 = 513,426.99/x - Step 3: Cross multiply
621,265.20x = 930,531.84 × 513,426.99 - Step 4: Simplify right side
621,265.20x = 477,760,161,710.36 - Step 5: Solve for x
x = 477,760,161,710.36/621,265.20 - Step 6: Final answer
x = 769,011.63
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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.