Finding the Fourth Proportional to 3,178,630.49, 4,386,564.90 and 1,728,335.75
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Solution
The fourth proportional to 3,178,630.49, 4,386,564.90 and 1,728,335.75 is: 2,385,133.14
Step by Step Solution
- Step 1: Write the proportion equation
3,178,630.49 : 4,386,564.90 = 1,728,335.75 : x - Step 2: Convert to fraction form
3,178,630.49/4,386,564.90 = 1,728,335.75/x - Step 3: Cross multiply
3,178,630.49x = 4,386,564.90 × 1,728,335.75 - Step 4: Simplify right side
3,178,630.49x = 7,581,456,914,432.35 - Step 5: Solve for x
x = 7,581,456,914,432.35/3,178,630.49 - Step 6: Final answer
x = 2,385,133.14
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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.