Finding the Fourth Proportional to 426,698.36, 640,175.99 and 127,178.92
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Solution
The fourth proportional to 426,698.36, 640,175.99 and 127,178.92 is: 190,806.66
Step by Step Solution
- Step 1: Write the proportion equation
426,698.36 : 640,175.99 = 127,178.92 : x - Step 2: Convert to fraction form
426,698.36/640,175.99 = 127,178.92/x - Step 3: Cross multiply
426,698.36x = 640,175.99 × 127,178.92 - Step 4: Simplify right side
426,698.36x = 81,416,888,781.80 - Step 5: Solve for x
x = 81,416,888,781.80/426,698.36 - Step 6: Final answer
x = 190,806.66
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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.