Finding the Fourth Proportional to 427,947.70, 641,921.55 and 303,531.70
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Solution
The fourth proportional to 427,947.70, 641,921.55 and 303,531.70 is: 455,297.55
Step by Step Solution
- Step 1: Write the proportion equation
427,947.70 : 641,921.55 = 303,531.70 : x - Step 2: Convert to fraction form
427,947.70/641,921.55 = 303,531.70/x - Step 3: Cross multiply
427,947.70x = 641,921.55 × 303,531.70 - Step 4: Simplify right side
427,947.70x = 194,843,539,338.14 - Step 5: Solve for x
x = 194,843,539,338.14/427,947.70 - Step 6: Final answer
x = 455,297.55
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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.