Finding the Fourth Proportional to 1,421,274.20, 1,963,432.71 and 1,229,955.44
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Solution
The fourth proportional to 1,421,274.20, 1,963,432.71 and 1,229,955.44 is: 1,699,133.60
Step by Step Solution
- Step 1: Write the proportion equation
1,421,274.20 : 1,963,432.71 = 1,229,955.44 : x - Step 2: Convert to fraction form
1,421,274.20/1,963,432.71 = 1,229,955.44/x - Step 3: Cross multiply
1,421,274.20x = 1,963,432.71 × 1,229,955.44 - Step 4: Simplify right side
1,421,274.20x = 2,414,934,732,921.28 - Step 5: Solve for x
x = 2,414,934,732,921.28/1,421,274.20 - Step 6: Final answer
x = 1,699,133.60
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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.