Finding the Fourth Proportional to 764,946,747.60, 1,147,420,121.40 and 247,429,501.80
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Solution
The fourth proportional to 764,946,747.60, 1,147,420,121.40 and 247,429,501.80 is: 371,144,252.70
Step by Step Solution
- Step 1: Write the proportion equation
764,946,747.60 : 1,147,420,121.40 = 247,429,501.80 : x - Step 2: Convert to fraction form
764,946,747.60/1,147,420,121.40 = 247,429,501.80/x - Step 3: Cross multiply
764,946,747.60x = 1,147,420,121.40 × 247,429,501.80 - Step 4: Simplify right side
764,946,747.60x = 283,905,588,993,297,568 - Step 5: Solve for x
x = 283,905,588,993,297,568/764,946,747.60 - Step 6: Final answer
x = 371,144,252.70
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1.5x scale
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.