Finding the Fourth Proportional to 1,327,206,778.48, 1,990,588,208.02 and 486,675,831.62
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Solution
The fourth proportional to 1,327,206,778.48, 1,990,588,208.02 and 486,675,831.62 is: 729,932,356.63
Step by Step Solution
- Step 1: Write the proportion equation
1,327,206,778.48 : 1,990,588,208.02 = 486,675,831.62 : x - Step 2: Convert to fraction form
1,327,206,778.48/1,990,588,208.02 = 486,675,831.62/x - Step 3: Cross multiply
1,327,206,778.48x = 1,990,588,208.02 × 486,675,831.62 - Step 4: Simplify right side
1,327,206,778.48x = 968,771,171,551,099,008 - Step 5: Solve for x
x = 968,771,171,551,099,008/1,327,206,778.48 - Step 6: Final answer
x = 729,932,356.63
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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.