Finding the Fourth Proportional to 812,798.76, 1,121,649.52 and 445,272.96
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Solution
The fourth proportional to 812,798.76, 1,121,649.52 and 445,272.96 is: 614,469.69
Step by Step Solution
- Step 1: Write the proportion equation
812,798.76 : 1,121,649.52 = 445,272.96 : x - Step 2: Convert to fraction form
812,798.76/1,121,649.52 = 445,272.96/x - Step 3: Cross multiply
812,798.76x = 1,121,649.52 × 445,272.96 - Step 4: Simplify right side
812,798.76x = 499,440,201,852.98 - Step 5: Solve for x
x = 499,440,201,852.98/812,798.76 - Step 6: Final answer
x = 614,469.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.