Finding the Fourth Proportional to 438,435.40, 657,653.10 and 349,205.80
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Solution
The fourth proportional to 438,435.40, 657,653.10 and 349,205.80 is: 523,808.70
Step by Step Solution
- Step 1: Write the proportion equation
438,435.40 : 657,653.10 = 349,205.80 : x - Step 2: Convert to fraction form
438,435.40/657,653.10 = 349,205.80/x - Step 3: Cross multiply
438,435.40x = 657,653.10 × 349,205.80 - Step 4: Simplify right side
438,435.40x = 229,656,276,907.98 - Step 5: Solve for x
x = 229,656,276,907.98/438,435.40 - Step 6: Final answer
x = 523,808.70
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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.