Finding the Fourth Proportional to 409,968.20, 614,952.30 and 394,221.80
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Solution
The fourth proportional to 409,968.20, 614,952.30 and 394,221.80 is: 591,332.70
Step by Step Solution
- Step 1: Write the proportion equation
409,968.20 : 614,952.30 = 394,221.80 : x - Step 2: Convert to fraction form
409,968.20/614,952.30 = 394,221.80/x - Step 3: Cross multiply
409,968.20x = 614,952.30 × 394,221.80 - Step 4: Simplify right side
409,968.20x = 242,427,602,620.14 - Step 5: Solve for x
x = 242,427,602,620.14/409,968.20 - Step 6: Final answer
x = 591,332.70
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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.