Finding the Fourth Proportional to 926,543.09, 1,278,570.21 and 518,576.33
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Solution
The fourth proportional to 926,543.09, 1,278,570.21 and 518,576.33 is: 715,602.17
Step by Step Solution
- Step 1: Write the proportion equation
926,543.09 : 1,278,570.21 = 518,576.33 : x - Step 2: Convert to fraction form
926,543.09/1,278,570.21 = 518,576.33/x - Step 3: Cross multiply
926,543.09x = 1,278,570.21 × 518,576.33 - Step 4: Simplify right side
926,543.09x = 663,036,247,149.13 - Step 5: Solve for x
x = 663,036,247,149.13/926,543.09 - Step 6: Final answer
x = 715,602.17
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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.