Finding the Fourth Proportional to 489,940,169.38, 676,115,394.68 and 266,921,156.70
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Solution
The fourth proportional to 489,940,169.38, 676,115,394.68 and 266,921,156.70 is: 368,350,085.36
Step by Step Solution
- Step 1: Write the proportion equation
489,940,169.38 : 676,115,394.68 = 266,921,156.70 : x - Step 2: Convert to fraction form
489,940,169.38/676,115,394.68 = 266,921,156.70/x - Step 3: Cross multiply
489,940,169.38x = 676,115,394.68 × 266,921,156.70 - Step 4: Simplify right side
489,940,169.38x = 180,469,503,210,662,592 - Step 5: Solve for x
x = 180,469,503,210,662,592/489,940,169.38 - Step 6: Final answer
x = 368,350,085.36
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.