Finding the Fourth Proportional to 739,435.43, 1,020,421.57 and 399,903.68
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Solution
The fourth proportional to 739,435.43, 1,020,421.57 and 399,903.68 is: 551,867.45
Step by Step Solution
- Step 1: Write the proportion equation
739,435.43 : 1,020,421.57 = 399,903.68 : x - Step 2: Convert to fraction form
739,435.43/1,020,421.57 = 399,903.68/x - Step 3: Cross multiply
739,435.43x = 1,020,421.57 × 399,903.68 - Step 4: Simplify right side
739,435.43x = 408,070,344,045.31 - Step 5: Solve for x
x = 408,070,344,045.31/739,435.43 - Step 6: Final answer
x = 551,867.45
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1.5x scale
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.