Finding the Fourth Proportional to 412,213.70, 618,320.55 and 412,213.70
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Solution
The fourth proportional to 412,213.70, 618,320.55 and 412,213.70 is: 618,320.55
Step by Step Solution
- Step 1: Write the proportion equation
412,213.70 : 618,320.55 = 412,213.70 : x - Step 2: Convert to fraction form
412,213.70/618,320.55 = 412,213.70/x - Step 3: Cross multiply
412,213.70x = 618,320.55 × 412,213.70 - Step 4: Simplify right side
412,213.70x = 254,880,201,701.54 - Step 5: Solve for x
x = 254,880,201,701.54/412,213.70 - Step 6: Final answer
x = 618,320.55
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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.