Finding the Fourth Proportional to 780,780.70, 1,170,077.55 and 621,129.70
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Solution
The fourth proportional to 780,780.70, 1,170,077.55 and 621,129.70 is: 930,824.64
Step by Step Solution
- Step 1: Write the proportion equation
780,780.70 : 1,170,077.55 = 621,129.70 : x - Step 2: Convert to fraction form
780,780.70/1,170,077.55 = 621,129.70/x - Step 3: Cross multiply
780,780.70x = 1,170,077.55 × 621,129.70 - Step 4: Simplify right side
780,780.70x = 726,769,917,608.24 - Step 5: Solve for x
x = 726,769,917,608.24/780,780.70 - Step 6: Final answer
x = 930,824.64
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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.