Finding the Fourth Proportional to 743,617,352.75, 1,115,185,219.76 and 245,515,971.88
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Solution
The fourth proportional to 743,617,352.75, 1,115,185,219.76 and 245,515,971.88 is: 368,194,451.15
Step by Step Solution
- Step 1: Write the proportion equation
743,617,352.75 : 1,115,185,219.76 = 245,515,971.88 : x - Step 2: Convert to fraction form
743,617,352.75/1,115,185,219.76 = 245,515,971.88/x - Step 3: Cross multiply
743,617,352.75x = 1,115,185,219.76 × 245,515,971.88 - Step 4: Simplify right side
743,617,352.75x = 273,795,783,057,595,552 - Step 5: Solve for x
x = 273,795,783,057,595,552/743,617,352.75 - Step 6: Final answer
x = 368,194,451.15
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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.