Finding the Fourth Proportional to 411,722.75, 617,643.14 and 127,438.26
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Solution
The fourth proportional to 411,722.75, 617,643.14 and 127,438.26 is: 191,175.66
Step by Step Solution
- Step 1: Write the proportion equation
411,722.75 : 617,643.14 = 127,438.26 : x - Step 2: Convert to fraction form
411,722.75/617,643.14 = 127,438.26/x - Step 3: Cross multiply
411,722.75x = 617,643.14 × 127,438.26 - Step 4: Simplify right side
411,722.75x = 78,711,368,300.27 - Step 5: Solve for x
x = 78,711,368,300.27/411,722.75 - Step 6: Final answer
x = 191,175.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.