Finding the Fourth Proportional to 513,122.40, 770,461.20 and 394,927.20
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Solution
The fourth proportional to 513,122.40, 770,461.20 and 394,927.20 is: 592,989.28
Step by Step Solution
- Step 1: Write the proportion equation
513,122.40 : 770,461.20 = 394,927.20 : x - Step 2: Convert to fraction form
513,122.40/770,461.20 = 394,927.20/x - Step 3: Cross multiply
513,122.40x = 770,461.20 × 394,927.20 - Step 4: Simplify right side
513,122.40x = 304,276,084,424.64 - Step 5: Solve for x
x = 304,276,084,424.64/513,122.40 - Step 6: Final answer
x = 592,989.28
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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.