Finding the Fourth Proportional to 1,240,194,879.20, 1,860,292,318.80 and 551,447,343.20
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Solution
The fourth proportional to 1,240,194,879.20, 1,860,292,318.80 and 551,447,343.20 is: 827,171,014.80
Step by Step Solution
- Step 1: Write the proportion equation
1,240,194,879.20 : 1,860,292,318.80 = 551,447,343.20 : x - Step 2: Convert to fraction form
1,240,194,879.20/1,860,292,318.80 = 551,447,343.20/x - Step 3: Cross multiply
1,240,194,879.20x = 1,860,292,318.80 × 551,447,343.20 - Step 4: Simplify right side
1,240,194,879.20x = 1,025,853,256,777,627,520 - Step 5: Solve for x
x = 1,025,853,256,777,627,520/1,240,194,879.20 - Step 6: Final answer
x = 827,171,014.80
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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.