Finding the Fourth Proportional to 664,853,902.20, 997,280,853.30 and 389,354,887.80
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Solution
The fourth proportional to 664,853,902.20, 997,280,853.30 and 389,354,887.80 is: 584,032,331.70
Step by Step Solution
- Step 1: Write the proportion equation
664,853,902.20 : 997,280,853.30 = 389,354,887.80 : x - Step 2: Convert to fraction form
664,853,902.20/997,280,853.30 = 389,354,887.80/x - Step 3: Cross multiply
664,853,902.20x = 997,280,853.30 × 389,354,887.80 - Step 4: Simplify right side
664,853,902.20x = 388,296,174,741,709,760 - Step 5: Solve for x
x = 388,296,174,741,709,760/664,853,902.20 - Step 6: Final answer
x = 584,032,331.70
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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.