Finding the Fourth Proportional to 519,988.18, 717,588.44 and 305,131.84
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Solution
The fourth proportional to 519,988.18, 717,588.44 and 305,131.84 is: 421,084.73
Step by Step Solution
- Step 1: Write the proportion equation
519,988.18 : 717,588.44 = 305,131.84 : x - Step 2: Convert to fraction form
519,988.18/717,588.44 = 305,131.84/x - Step 3: Cross multiply
519,988.18x = 717,588.44 × 305,131.84 - Step 4: Simplify right side
519,988.18x = 218,959,081,059.93 - Step 5: Solve for x
x = 218,959,081,059.93/519,988.18 - Step 6: Final answer
x = 421,084.73
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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.