Finding the Fourth Proportional to 863,592,421.20, 1,295,388,631.80 and 708,624,225.60
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Solution
The fourth proportional to 863,592,421.20, 1,295,388,631.80 and 708,624,225.60 is: 1,062,936,338.40
Step by Step Solution
- Step 1: Write the proportion equation
863,592,421.20 : 1,295,388,631.80 = 708,624,225.60 : x - Step 2: Convert to fraction form
863,592,421.20/1,295,388,631.80 = 708,624,225.60/x - Step 3: Cross multiply
863,592,421.20x = 1,295,388,631.80 × 708,624,225.60 - Step 4: Simplify right side
863,592,421.20x = 917,943,766,060,318,592 - Step 5: Solve for x
x = 917,943,766,060,318,592/863,592,421.20 - Step 6: Final answer
x = 1,062,936,338.40
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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.