Finding the Fourth Proportional to 3,178,769.66, 4,386,671.86 and 1,728,466.08
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Solution
The fourth proportional to 3,178,769.66, 4,386,671.86 and 1,728,466.08 is: 2,385,266.73
Step by Step Solution
- Step 1: Write the proportion equation
3,178,769.66 : 4,386,671.86 = 1,728,466.08 : x - Step 2: Convert to fraction form
3,178,769.66/4,386,671.86 = 1,728,466.08/x - Step 3: Cross multiply
3,178,769.66x = 4,386,671.86 × 1,728,466.08 - Step 4: Simplify right side
3,178,769.66x = 7,582,213,514,100.51 - Step 5: Solve for x
x = 7,582,213,514,100.51/3,178,769.66 - Step 6: Final answer
x = 2,385,266.73
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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.