Finding the Fourth Proportional to 622,705,788.80, 934,058,683.20 and 393,690,147.20
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Solution
The fourth proportional to 622,705,788.80, 934,058,683.20 and 393,690,147.20 is: 590,535,220.80
Step by Step Solution
- Step 1: Write the proportion equation
622,705,788.80 : 934,058,683.20 = 393,690,147.20 : x - Step 2: Convert to fraction form
622,705,788.80/934,058,683.20 = 393,690,147.20/x - Step 3: Cross multiply
622,705,788.80x = 934,058,683.20 × 393,690,147.20 - Step 4: Simplify right side
622,705,788.80x = 367,729,700,482,446,144 - Step 5: Solve for x
x = 367,729,700,482,446,144/622,705,788.80 - Step 6: Final answer
x = 590,535,220.80
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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.