Finding the Fourth Proportional to 744,869.70, 1,117,314.96 and 212,390.94
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Solution
The fourth proportional to 744,869.70, 1,117,314.96 and 212,390.94 is: 318,589.38
Step by Step Solution
- Step 1: Write the proportion equation
744,869.70 : 1,117,314.96 = 212,390.94 : x - Step 2: Convert to fraction form
744,869.70/1,117,314.96 = 212,390.94/x - Step 3: Cross multiply
744,869.70x = 1,117,314.96 × 212,390.94 - Step 4: Simplify right side
744,869.70x = 237,307,574,630.46 - Step 5: Solve for x
x = 237,307,574,630.46/744,869.70 - Step 6: Final answer
x = 318,589.38
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1.5x scale
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.