Finding the Fourth Proportional to 1,266,781.21, 1,748,186.36 and 722,906.17
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Solution
The fourth proportional to 1,266,781.21, 1,748,186.36 and 722,906.17 is: 997,626.66
Step by Step Solution
- Step 1: Write the proportion equation
1,266,781.21 : 1,748,186.36 = 722,906.17 : x - Step 2: Convert to fraction form
1,266,781.21/1,748,186.36 = 722,906.17/x - Step 3: Cross multiply
1,266,781.21x = 1,748,186.36 × 722,906.17 - Step 4: Simplify right side
1,266,781.21x = 1,263,774,702,339.31 - Step 5: Solve for x
x = 1,263,774,702,339.31/1,266,781.21 - Step 6: Final answer
x = 997,626.66
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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.