Finding the Fourth Proportional to 513,118.40, 768,511.20 and 324,161.60
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Solution
The fourth proportional to 513,118.40, 768,511.20 and 324,161.60 is: 485,505.53
Step by Step Solution
- Step 1: Write the proportion equation
513,118.40 : 768,511.20 = 324,161.60 : x - Step 2: Convert to fraction form
513,118.40/768,511.20 = 324,161.60/x - Step 3: Cross multiply
513,118.40x = 768,511.20 × 324,161.60 - Step 4: Simplify right side
513,118.40x = 249,121,820,209.92 - Step 5: Solve for x
x = 249,121,820,209.92/513,118.40 - Step 6: Final answer
x = 485,505.53
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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.