Finding the Fourth Proportional to 612,713.80, 919,070.70 and 297,785.80
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Solution
The fourth proportional to 612,713.80, 919,070.70 and 297,785.80 is: 446,678.70
Step by Step Solution
- Step 1: Write the proportion equation
612,713.80 : 919,070.70 = 297,785.80 : x - Step 2: Convert to fraction form
612,713.80/919,070.70 = 297,785.80/x - Step 3: Cross multiply
612,713.80x = 919,070.70 × 297,785.80 - Step 4: Simplify right side
612,713.80x = 273,686,203,656.06 - Step 5: Solve for x
x = 273,686,203,656.06/612,713.80 - Step 6: Final answer
x = 446,678.70
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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.