Finding the Fourth Proportional to 643,272.75, 887,135.36 and 401,577.66
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Solution
The fourth proportional to 643,272.75, 887,135.36 and 401,577.66 is: 553,814.44
Step by Step Solution
- Step 1: Write the proportion equation
643,272.75 : 887,135.36 = 401,577.66 : x - Step 2: Convert to fraction form
643,272.75/887,135.36 = 401,577.66/x - Step 3: Cross multiply
643,272.75x = 887,135.36 × 401,577.66 - Step 4: Simplify right side
643,272.75x = 356,253,739,964.17 - Step 5: Solve for x
x = 356,253,739,964.17/643,272.75 - Step 6: Final answer
x = 553,814.44
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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.