Finding the Fourth Proportional to 612,138.80, 918,208.20 and 444,177.20
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Solution
The fourth proportional to 612,138.80, 918,208.20 and 444,177.20 is: 666,265.80
Step by Step Solution
- Step 1: Write the proportion equation
612,138.80 : 918,208.20 = 444,177.20 : x - Step 2: Convert to fraction form
612,138.80/918,208.20 = 444,177.20/x - Step 3: Cross multiply
612,138.80x = 918,208.20 × 444,177.20 - Step 4: Simplify right side
612,138.80x = 407,847,147,293.04 - Step 5: Solve for x
x = 407,847,147,293.04/612,138.80 - Step 6: Final answer
x = 666,265.80
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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.