Finding the Fourth Proportional to 780,102.36, 1,169,921.70 and 330,816.60
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Solution
The fourth proportional to 780,102.36, 1,169,921.70 and 330,816.60 is: 496,126.58
Step by Step Solution
- Step 1: Write the proportion equation
780,102.36 : 1,169,921.70 = 330,816.60 : x - Step 2: Convert to fraction form
780,102.36/1,169,921.70 = 330,816.60/x - Step 3: Cross multiply
780,102.36x = 1,169,921.70 × 330,816.60 - Step 4: Simplify right side
780,102.36x = 387,029,519,060.22 - Step 5: Solve for x
x = 387,029,519,060.22/780,102.36 - Step 6: Final answer
x = 496,126.58
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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.