Finding the Fourth Proportional to 718,612.68, 991,435.05 and 460,631.87
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Solution
The fourth proportional to 718,612.68, 991,435.05 and 460,631.87 is: 635,511.45
Step by Step Solution
- Step 1: Write the proportion equation
718,612.68 : 991,435.05 = 460,631.87 : x - Step 2: Convert to fraction form
718,612.68/991,435.05 = 460,631.87/x - Step 3: Cross multiply
718,612.68x = 991,435.05 × 460,631.87 - Step 4: Simplify right side
718,612.68x = 456,686,585,765.05 - Step 5: Solve for x
x = 456,686,585,765.05/718,612.68 - Step 6: Final answer
x = 635,511.45
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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.