Finding the Fourth Proportional to 438,438.30, 614,435.70 and 438,438.30
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Solution
The fourth proportional to 438,438.30, 614,435.70 and 438,438.30 is: 614,435.70
Step by Step Solution
- Step 1: Write the proportion equation
438,438.30 : 614,435.70 = 438,438.30 : x - Step 2: Convert to fraction form
438,438.30/614,435.70 = 438,438.30/x - Step 3: Cross multiply
438,438.30x = 614,435.70 × 438,438.30 - Step 4: Simplify right side
438,438.30x = 269,392,143,767.31 - Step 5: Solve for x
x = 269,392,143,767.31/438,438.30 - Step 6: Final answer
x = 614,435.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.