Finding the Fourth Proportional to 638,252,469.20, 957,378,703.80 and 249,946,245.20
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Solution
The fourth proportional to 638,252,469.20, 957,378,703.80 and 249,946,245.20 is: 374,919,367.80
Step by Step Solution
- Step 1: Write the proportion equation
638,252,469.20 : 957,378,703.80 = 249,946,245.20 : x - Step 2: Convert to fraction form
638,252,469.20/957,378,703.80 = 249,946,245.20/x - Step 3: Cross multiply
638,252,469.20x = 957,378,703.80 × 249,946,245.20 - Step 4: Simplify right side
638,252,469.20x = 239,293,212,249,252,960 - Step 5: Solve for x
x = 239,293,212,249,252,960/638,252,469.20 - Step 6: Final answer
x = 374,919,367.80
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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.