Finding the Fourth Proportional to 405,969.70, 569,290.70 and 405,969.70
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Solution
The fourth proportional to 405,969.70, 569,290.70 and 405,969.70 is: 569,290.70
Step by Step Solution
- Step 1: Write the proportion equation
405,969.70 : 569,290.70 = 405,969.70 : x - Step 2: Convert to fraction form
405,969.70/569,290.70 = 405,969.70/x - Step 3: Cross multiply
405,969.70x = 569,290.70 × 405,969.70 - Step 4: Simplify right side
405,969.70x = 231,114,774,691.79 - Step 5: Solve for x
x = 231,114,774,691.79/405,969.70 - Step 6: Final answer
x = 569,290.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.