Finding the Fourth Proportional to 723,431.39, 998,331.28 and 401,189.09
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Solution
The fourth proportional to 723,431.39, 998,331.28 and 401,189.09 is: 553,638.70
Step by Step Solution
- Step 1: Write the proportion equation
723,431.39 : 998,331.28 = 401,189.09 : x - Step 2: Convert to fraction form
723,431.39/998,331.28 = 401,189.09/x - Step 3: Cross multiply
723,431.39x = 998,331.28 × 401,189.09 - Step 4: Simplify right side
723,431.39x = 400,519,611,747.11 - Step 5: Solve for x
x = 400,519,611,747.11/723,431.39 - Step 6: Final answer
x = 553,638.70
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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.