Finding the Fourth Proportional to 2,128,422.81, 2,937,285.75 and 1,161,615.12
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Solution
The fourth proportional to 2,128,422.81, 2,937,285.75 and 1,161,615.12 is: 1,603,062.85
Step by Step Solution
- Step 1: Write the proportion equation
2,128,422.81 : 2,937,285.75 = 1,161,615.12 : x - Step 2: Convert to fraction form
2,128,422.81/2,937,285.75 = 1,161,615.12/x - Step 3: Cross multiply
2,128,422.81x = 2,937,285.75 × 1,161,615.12 - Step 4: Simplify right side
2,128,422.81x = 3,411,995,538,960.54 - Step 5: Solve for x
x = 3,411,995,538,960.54/2,128,422.81 - Step 6: Final answer
x = 1,603,062.85
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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.