Finding the Fourth Proportional to 664,272,078.40, 996,408,117.60 and 354,335,687.20
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Solution
The fourth proportional to 664,272,078.40, 996,408,117.60 and 354,335,687.20 is: 531,503,530.80
Step by Step Solution
- Step 1: Write the proportion equation
664,272,078.40 : 996,408,117.60 = 354,335,687.20 : x - Step 2: Convert to fraction form
664,272,078.40/996,408,117.60 = 354,335,687.20/x - Step 3: Cross multiply
664,272,078.40x = 996,408,117.60 × 354,335,687.20 - Step 4: Simplify right side
664,272,078.40x = 353,062,955,081,454,400 - Step 5: Solve for x
x = 353,062,955,081,454,400/664,272,078.40 - Step 6: Final answer
x = 531,503,530.80
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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.