Finding the Fourth Proportional to 613,387.32, 920,028.12 and 373,439.09
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Solution
The fourth proportional to 613,387.32, 920,028.12 and 373,439.09 is: 560,126.45
Step by Step Solution
- Step 1: Write the proportion equation
613,387.32 : 920,028.12 = 373,439.09 : x - Step 2: Convert to fraction form
613,387.32/920,028.12 = 373,439.09/x - Step 3: Cross multiply
613,387.32x = 920,028.12 × 373,439.09 - Step 4: Simplify right side
613,387.32x = 343,574,463,907.21 - Step 5: Solve for x
x = 343,574,463,907.21/613,387.32 - Step 6: Final answer
x = 560,126.45
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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.