Finding the Fourth Proportional to 1,887,561.36, 2,605,403.88 and 1,284,299.28
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Solution
The fourth proportional to 1,887,561.36, 2,605,403.88 and 1,284,299.28 is: 1,772,720.29
Step by Step Solution
- Step 1: Write the proportion equation
1,887,561.36 : 2,605,403.88 = 1,284,299.28 : x - Step 2: Convert to fraction form
1,887,561.36/2,605,403.88 = 1,284,299.28/x - Step 3: Cross multiply
1,887,561.36x = 2,605,403.88 × 1,284,299.28 - Step 4: Simplify right side
1,887,561.36x = 3,346,118,327,193.21 - Step 5: Solve for x
x = 3,346,118,327,193.21/1,887,561.36 - Step 6: Final answer
x = 1,772,720.29
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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.