Finding the Fourth Proportional to 723,991,630.20, 1,085,987,445.30 and 263,944,807.80
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Solution
The fourth proportional to 723,991,630.20, 1,085,987,445.30 and 263,944,807.80 is: 395,917,211.70
Step by Step Solution
- Step 1: Write the proportion equation
723,991,630.20 : 1,085,987,445.30 = 263,944,807.80 : x - Step 2: Convert to fraction form
723,991,630.20/1,085,987,445.30 = 263,944,807.80/x - Step 3: Cross multiply
723,991,630.20x = 1,085,987,445.30 × 263,944,807.80 - Step 4: Simplify right side
723,991,630.20x = 286,640,747,522,921,504 - Step 5: Solve for x
x = 286,640,747,522,921,504/723,991,630.20 - Step 6: Final answer
x = 395,917,211.70
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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.