Finding the Fourth Proportional to 385,511,180.79, 578,321,678.55 and 119,639,863.65
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Solution
The fourth proportional to 385,511,180.79, 578,321,678.55 and 119,639,863.65 is: 179,476,835.47
Step by Step Solution
- Step 1: Write the proportion equation
385,511,180.79 : 578,321,678.55 = 119,639,863.65 : x - Step 2: Convert to fraction form
385,511,180.79/578,321,678.55 = 119,639,863.65/x - Step 3: Cross multiply
385,511,180.79x = 578,321,678.55 × 119,639,863.65 - Step 4: Simplify right side
385,511,180.79x = 69,190,326,767,561,128 - Step 5: Solve for x
x = 69,190,326,767,561,128/385,511,180.79 - Step 6: Final answer
x = 179,476,835.47
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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.