Finding the Fourth Proportional to 739,952.84, 1,021,135.82 and 400,421.09
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Solution
The fourth proportional to 739,952.84, 1,021,135.82 and 400,421.09 is: 552,581.59
Step by Step Solution
- Step 1: Write the proportion equation
739,952.84 : 1,021,135.82 = 400,421.09 : x - Step 2: Convert to fraction form
739,952.84/1,021,135.82 = 400,421.09/x - Step 3: Cross multiply
739,952.84x = 1,021,135.82 × 400,421.09 - Step 4: Simplify right side
739,952.84x = 408,884,310,974.66 - Step 5: Solve for x
x = 408,884,310,974.66/739,952.84 - Step 6: Final answer
x = 552,581.59
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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.