Finding the Fourth Proportional to 2,811,867.36, 4,217,768.40 and 1,128,941.28
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Solution
The fourth proportional to 2,811,867.36, 4,217,768.40 and 1,128,941.28 is: 1,693,398.82
Step by Step Solution
- Step 1: Write the proportion equation
2,811,867.36 : 4,217,768.40 = 1,128,941.28 : x - Step 2: Convert to fraction form
2,811,867.36/4,217,768.40 = 1,128,941.28/x - Step 3: Cross multiply
2,811,867.36x = 4,217,768.40 × 1,128,941.28 - Step 4: Simplify right side
2,811,867.36x = 4,761,612,856,239.55 - Step 5: Solve for x
x = 4,761,612,856,239.55/2,811,867.36 - Step 6: Final answer
x = 1,693,398.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.