Finding the Fourth Proportional to 689,705.68, 1,034,546.45 and 310,357.92
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Solution
The fourth proportional to 689,705.68, 1,034,546.45 and 310,357.92 is: 465,531.45
Step by Step Solution
- Step 1: Write the proportion equation
689,705.68 : 1,034,546.45 = 310,357.92 : x - Step 2: Convert to fraction form
689,705.68/1,034,546.45 = 310,357.92/x - Step 3: Cross multiply
689,705.68x = 1,034,546.45 × 310,357.92 - Step 4: Simplify right side
689,705.68x = 321,079,686,693.14 - Step 5: Solve for x
x = 321,079,686,693.14/689,705.68 - Step 6: Final answer
x = 465,531.45
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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.