Finding the Fourth Proportional to 408,368,512.80, 612,552,769.20 and 135,703,850.40
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Solution
The fourth proportional to 408,368,512.80, 612,552,769.20 and 135,703,850.40 is: 203,555,775.60
Step by Step Solution
- Step 1: Write the proportion equation
408,368,512.80 : 612,552,769.20 = 135,703,850.40 : x - Step 2: Convert to fraction form
408,368,512.80/612,552,769.20 = 135,703,850.40/x - Step 3: Cross multiply
408,368,512.80x = 612,552,769.20 × 135,703,850.40 - Step 4: Simplify right side
408,368,512.80x = 83,125,769,353,622,544 - Step 5: Solve for x
x = 83,125,769,353,622,544/408,368,512.80 - Step 6: Final answer
x = 203,555,775.60
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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.