Finding the Fourth Proportional to 439,121,447.92, 658,617,380.86 and 128,145,566.62
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Solution
The fourth proportional to 439,121,447.92, 658,617,380.86 and 128,145,566.62 is: 192,199,442.45
Step by Step Solution
- Step 1: Write the proportion equation
439,121,447.92 : 658,617,380.86 = 128,145,566.62 : x - Step 2: Convert to fraction form
439,121,447.92/658,617,380.86 = 128,145,566.62/x - Step 3: Cross multiply
439,121,447.92x = 658,617,380.86 × 128,145,566.62 - Step 4: Simplify right side
439,121,447.92x = 84,398,897,456,085,040 - Step 5: Solve for x
x = 84,398,897,456,085,040/439,121,447.92 - Step 6: Final answer
x = 192,199,442.45
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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.