Finding the Fourth Proportional to 919,146.35, 1,378,756.62 and 320,168.09
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Solution
The fourth proportional to 919,146.35, 1,378,756.62 and 320,168.09 is: 480,265.06
Step by Step Solution
- Step 1: Write the proportion equation
919,146.35 : 1,378,756.62 = 320,168.09 : x - Step 2: Convert to fraction form
919,146.35/1,378,756.62 = 320,168.09/x - Step 3: Cross multiply
919,146.35x = 1,378,756.62 × 320,168.09 - Step 4: Simplify right side
919,146.35x = 441,433,877,047.15 - Step 5: Solve for x
x = 441,433,877,047.15/919,146.35 - Step 6: Final answer
x = 480,265.06
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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.