Finding the Fourth Proportional to 438,438.20, 657,657.30 and 305,727.80
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Solution
The fourth proportional to 438,438.20, 657,657.30 and 305,727.80 is: 458,591.70
Step by Step Solution
- Step 1: Write the proportion equation
438,438.20 : 657,657.30 = 305,727.80 : x - Step 2: Convert to fraction form
438,438.20/657,657.30 = 305,727.80/x - Step 3: Cross multiply
438,438.20x = 657,657.30 × 305,727.80 - Step 4: Simplify right side
438,438.20x = 201,064,119,482.94 - Step 5: Solve for x
x = 201,064,119,482.94/438,438.20 - Step 6: Final answer
x = 458,591.70
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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.