Finding the Fourth Proportional to 731,131.70, 1,006,718.74 and 639,977.54
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Solution
The fourth proportional to 731,131.70, 1,006,718.74 and 639,977.54 is: 881,205.65
Step by Step Solution
- Step 1: Write the proportion equation
731,131.70 : 1,006,718.74 = 639,977.54 : x - Step 2: Convert to fraction form
731,131.70/1,006,718.74 = 639,977.54/x - Step 3: Cross multiply
731,131.70x = 1,006,718.74 × 639,977.54 - Step 4: Simplify right side
731,131.70x = 644,277,382,697.10 - Step 5: Solve for x
x = 644,277,382,697.10/731,131.70 - Step 6: Final answer
x = 881,205.65
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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.