Finding the Fourth Proportional to 394,753.80, 592,130.70 and 316,021.80
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Solution
The fourth proportional to 394,753.80, 592,130.70 and 316,021.80 is: 474,032.70
Step by Step Solution
- Step 1: Write the proportion equation
394,753.80 : 592,130.70 = 316,021.80 : x - Step 2: Convert to fraction form
394,753.80/592,130.70 = 316,021.80/x - Step 3: Cross multiply
394,753.80x = 592,130.70 × 316,021.80 - Step 4: Simplify right side
394,753.80x = 187,126,209,649.26 - Step 5: Solve for x
x = 187,126,209,649.26/394,753.80 - Step 6: Final answer
x = 474,032.70
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1.5x scale
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.