Finding the Fourth Proportional to 638,104.48, 879,372.88 and 456,501.09
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Solution
The fourth proportional to 638,104.48, 879,372.88 and 456,501.09 is: 629,104.93
Step by Step Solution
- Step 1: Write the proportion equation
638,104.48 : 879,372.88 = 456,501.09 : x - Step 2: Convert to fraction form
638,104.48/879,372.88 = 456,501.09/x - Step 3: Cross multiply
638,104.48x = 879,372.88 × 456,501.09 - Step 4: Simplify right side
638,104.48x = 401,434,679,203.51 - Step 5: Solve for x
x = 401,434,679,203.51/638,104.48 - Step 6: Final answer
x = 629,104.93
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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.