Finding the Fourth Proportional to 622,756,971.80, 934,135,457.70 and 393,433,400.60
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Solution
The fourth proportional to 622,756,971.80, 934,135,457.70 and 393,433,400.60 is: 590,150,100.90
Step by Step Solution
- Step 1: Write the proportion equation
622,756,971.80 : 934,135,457.70 = 393,433,400.60 : x - Step 2: Convert to fraction form
622,756,971.80/934,135,457.70 = 393,433,400.60/x - Step 3: Cross multiply
622,756,971.80x = 934,135,457.70 × 393,433,400.60 - Step 4: Simplify right side
622,756,971.80x = 367,520,089,743,948,480 - Step 5: Solve for x
x = 367,520,089,743,948,480/622,756,971.80 - Step 6: Final answer
x = 590,150,100.90
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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.