Finding the Fourth Proportional to 986,689.68, 1,361,629.08 and 533,980.68
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Solution
The fourth proportional to 986,689.68, 1,361,629.08 and 533,980.68 is: 736,891.89
Step by Step Solution
- Step 1: Write the proportion equation
986,689.68 : 1,361,629.08 = 533,980.68 : x - Step 2: Convert to fraction form
986,689.68/1,361,629.08 = 533,980.68/x - Step 3: Cross multiply
986,689.68x = 1,361,629.08 × 533,980.68 - Step 4: Simplify right side
986,689.68x = 727,083,622,046.18 - Step 5: Solve for x
x = 727,083,622,046.18/986,689.68 - Step 6: Final answer
x = 736,891.89
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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.