Finding the Fourth Proportional to 638,987.40, 958,317.02 and 189,601.98
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Solution
The fourth proportional to 638,987.40, 958,317.02 and 189,601.98 is: 284,354.28
Step by Step Solution
- Step 1: Write the proportion equation
638,987.40 : 958,317.02 = 189,601.98 : x - Step 2: Convert to fraction form
638,987.40/958,317.02 = 189,601.98/x - Step 3: Cross multiply
638,987.40x = 958,317.02 × 189,601.98 - Step 4: Simplify right side
638,987.40x = 181,698,804,459.70 - Step 5: Solve for x
x = 181,698,804,459.70/638,987.40 - Step 6: Final answer
x = 284,354.28
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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.