Finding the Fourth Proportional to 426,623.29, 640,027.22 and 127,127.99
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Solution
The fourth proportional to 426,623.29, 640,027.22 and 127,127.99 is: 190,719.49
Step by Step Solution
- Step 1: Write the proportion equation
426,623.29 : 640,027.22 = 127,127.99 : x - Step 2: Convert to fraction form
426,623.29/640,027.22 = 127,127.99/x - Step 3: Cross multiply
426,623.29x = 640,027.22 × 127,127.99 - Step 4: Simplify right side
426,623.29x = 81,365,376,603.45 - Step 5: Solve for x
x = 81,365,376,603.45/426,623.29 - Step 6: Final answer
x = 190,719.49
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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.