Finding the Fourth Proportional to 1,422,576.36, 1,965,072.42 and 1,138,130.28
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Solution
The fourth proportional to 1,422,576.36, 1,965,072.42 and 1,138,130.28 is: 1,572,153.51
Step by Step Solution
- Step 1: Write the proportion equation
1,422,576.36 : 1,965,072.42 = 1,138,130.28 : x - Step 2: Convert to fraction form
1,422,576.36/1,965,072.42 = 1,138,130.28/x - Step 3: Cross multiply
1,422,576.36x = 1,965,072.42 × 1,138,130.28 - Step 4: Simplify right side
1,422,576.36x = 2,236,508,423,594.88 - Step 5: Solve for x
x = 2,236,508,423,594.88/1,422,576.36 - Step 6: Final answer
x = 1,572,153.51
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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.