Finding the Fourth Proportional to 728,713,474.40, 1,093,070,211.60 and 658,421,544.80
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Solution
The fourth proportional to 728,713,474.40, 1,093,070,211.60 and 658,421,544.80 is: 987,632,317.20
Step by Step Solution
- Step 1: Write the proportion equation
728,713,474.40 : 1,093,070,211.60 = 658,421,544.80 : x - Step 2: Convert to fraction form
728,713,474.40/1,093,070,211.60 = 658,421,544.80/x - Step 3: Cross multiply
728,713,474.40x = 1,093,070,211.60 × 658,421,544.80 - Step 4: Simplify right side
728,713,474.40x = 719,700,977,296,534,784 - Step 5: Solve for x
x = 719,700,977,296,534,784/728,713,474.40 - Step 6: Final answer
x = 987,632,317.20
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Double scale
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Similar ratio
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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.