Finding the Fourth Proportional to 403,994,506.67, 557,512,658.38 and 225,378,395.80
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Solution
The fourth proportional to 403,994,506.67, 557,512,658.38 and 225,378,395.80 is: 311,022,319.63
Step by Step Solution
- Step 1: Write the proportion equation
403,994,506.67 : 557,512,658.38 = 225,378,395.80 : x - Step 2: Convert to fraction form
403,994,506.67/557,512,658.38 = 225,378,395.80/x - Step 3: Cross multiply
403,994,506.67x = 557,512,658.38 × 225,378,395.80 - Step 4: Simplify right side
403,994,506.67x = 125,651,308,581,503,664 - Step 5: Solve for x
x = 125,651,308,581,503,664/403,994,506.67 - Step 6: Final answer
x = 311,022,319.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.