Finding the Fourth Proportional to 1,965,642.57, 2,712,137.99 and 1,105,889.13
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Solution
The fourth proportional to 1,965,642.57, 2,712,137.99 and 1,105,889.13 is: 1,525,874.52
Step by Step Solution
- Step 1: Write the proportion equation
1,965,642.57 : 2,712,137.99 = 1,105,889.13 : x - Step 2: Convert to fraction form
1,965,642.57/2,712,137.99 = 1,105,889.13/x - Step 3: Cross multiply
1,965,642.57x = 2,712,137.99 × 1,105,889.13 - Step 4: Simplify right side
1,965,642.57x = 2,999,323,916,671.60 - Step 5: Solve for x
x = 2,999,323,916,671.60/1,965,642.57 - Step 6: Final answer
x = 1,525,874.52
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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.