Finding the Fourth Proportional to 812,482.54, 1,121,147.67 and 485,730.97
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Solution
The fourth proportional to 812,482.54, 1,121,147.67 and 485,730.97 is: 670,261.97
Step by Step Solution
- Step 1: Write the proportion equation
812,482.54 : 1,121,147.67 = 485,730.97 : x - Step 2: Convert to fraction form
812,482.54/1,121,147.67 = 485,730.97/x - Step 3: Cross multiply
812,482.54x = 1,121,147.67 × 485,730.97 - Step 4: Simplify right side
812,482.54x = 544,576,145,262.34 - Step 5: Solve for x
x = 544,576,145,262.34/812,482.54 - Step 6: Final answer
x = 670,261.97
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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.