Finding the Fourth Proportional to 748,865,739.88, 1,123,451,814.63 and 257,515,197.60
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Solution
The fourth proportional to 748,865,739.88, 1,123,451,814.63 and 257,515,197.60 is: 386,325,479.50
Step by Step Solution
- Step 1: Write the proportion equation
748,865,739.88 : 1,123,451,814.63 = 257,515,197.60 : x - Step 2: Convert to fraction form
748,865,739.88/1,123,451,814.63 = 257,515,197.60/x - Step 3: Cross multiply
748,865,739.88x = 1,123,451,814.63 × 257,515,197.60 - Step 4: Simplify right side
748,865,739.88x = 289,305,916,038,523,072 - Step 5: Solve for x
x = 289,305,916,038,523,072/748,865,739.88 - Step 6: Final answer
x = 386,325,479.50
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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.