Finding the Fourth Proportional to 1,010,394,464.80, 1,515,591,697.20 and 551,229,440.80
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Solution
The fourth proportional to 1,010,394,464.80, 1,515,591,697.20 and 551,229,440.80 is: 826,844,161.20
Step by Step Solution
- Step 1: Write the proportion equation
1,010,394,464.80 : 1,515,591,697.20 = 551,229,440.80 : x - Step 2: Convert to fraction form
1,010,394,464.80/1,515,591,697.20 = 551,229,440.80/x - Step 3: Cross multiply
1,010,394,464.80x = 1,515,591,697.20 × 551,229,440.80 - Step 4: Simplify right side
1,010,394,464.80x = 835,438,763,728,678,912 - Step 5: Solve for x
x = 835,438,763,728,678,912/1,010,394,464.80 - Step 6: Final answer
x = 826,844,161.20
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Half scale
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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.