Finding the Fourth Proportional to 383,107,715.35, 528,688,627.07 and 206,895,693.68
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Solution
The fourth proportional to 383,107,715.35, 528,688,627.07 and 206,895,693.68 is: 285,516,046.42
Step by Step Solution
- Step 1: Write the proportion equation
383,107,715.35 : 528,688,627.07 = 206,895,693.68 : x - Step 2: Convert to fraction form
383,107,715.35/528,688,627.07 = 206,895,693.68/x - Step 3: Cross multiply
383,107,715.35x = 528,688,627.07 × 206,895,693.68 - Step 4: Simplify right side
383,107,715.35x = 109,383,400,238,374,480 - Step 5: Solve for x
x = 109,383,400,238,374,480/383,107,715.35 - Step 6: Final answer
x = 285,516,046.42
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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.