Finding the Fourth Proportional to 663,261.75, 915,448.95 and 421,497.18
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Solution
The fourth proportional to 663,261.75, 915,448.95 and 421,497.18 is: 581,759.99
Step by Step Solution
- Step 1: Write the proportion equation
663,261.75 : 915,448.95 = 421,497.18 : x - Step 2: Convert to fraction form
663,261.75/915,448.95 = 421,497.18/x - Step 3: Cross multiply
663,261.75x = 915,448.95 × 421,497.18 - Step 4: Simplify right side
663,261.75x = 385,859,150,858.96 - Step 5: Solve for x
x = 385,859,150,858.96/663,261.75 - Step 6: Final answer
x = 581,759.99
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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.