Finding the Fourth Proportional to 1,781,979.12, 2,459,243.16 and 977,163.12
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Solution
The fourth proportional to 1,781,979.12, 2,459,243.16 and 977,163.12 is: 1,348,546.51
Step by Step Solution
- Step 1: Write the proportion equation
1,781,979.12 : 2,459,243.16 = 977,163.12 : x - Step 2: Convert to fraction form
1,781,979.12/2,459,243.16 = 977,163.12/x - Step 3: Cross multiply
1,781,979.12x = 2,459,243.16 × 977,163.12 - Step 4: Simplify right side
1,781,979.12x = 2,403,081,719,064.26 - Step 5: Solve for x
x = 2,403,081,719,064.26/1,781,979.12 - Step 6: Final answer
x = 1,348,546.51
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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.