Finding the Fourth Proportional to 1,638,211.36, 2,260,863.12 and 913,293.76
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Solution
The fourth proportional to 1,638,211.36, 2,260,863.12 and 913,293.76 is: 1,260,418.67
Step by Step Solution
- Step 1: Write the proportion equation
1,638,211.36 : 2,260,863.12 = 913,293.76 : x - Step 2: Convert to fraction form
1,638,211.36/2,260,863.12 = 913,293.76/x - Step 3: Cross multiply
1,638,211.36x = 2,260,863.12 × 913,293.76 - Step 4: Simplify right side
1,638,211.36x = 2,064,832,179,710.13 - Step 5: Solve for x
x = 2,064,832,179,710.13/1,638,211.36 - Step 6: Final answer
x = 1,260,418.67
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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.