Finding the Fourth Proportional to 638,379.08, 880,945.44 and 351,899.09
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Solution
The fourth proportional to 638,379.08, 880,945.44 and 351,899.09 is: 485,610.99
Step by Step Solution
- Step 1: Write the proportion equation
638,379.08 : 880,945.44 = 351,899.09 : x - Step 2: Convert to fraction form
638,379.08/880,945.44 = 351,899.09/x - Step 3: Cross multiply
638,379.08x = 880,945.44 × 351,899.09 - Step 4: Simplify right side
638,379.08x = 310,003,898,675.65 - Step 5: Solve for x
x = 310,003,898,675.65/638,379.08 - Step 6: Final answer
x = 485,610.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.