Finding the Fourth Proportional to 685,256,850,861.14, 945,677,132,960.60 and 376,619,149,702.12
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Solution
The fourth proportional to 685,256,850,861.14, 945,677,132,960.60 and 376,619,149,702.12 is: 519,746,890,907.82
Step by Step Solution
- Step 1: Write the proportion equation
685,256,850,861.14 : 945,677,132,960.60 = 376,619,149,702.12 : x - Step 2: Convert to fraction form
685,256,850,861.14/945,677,132,960.60 = 376,619,149,702.12/x - Step 3: Cross multiply
685,256,850,861.14x = 945,677,132,960.60 × 376,619,149,702.12 - Step 4: Simplify right side
685,256,850,861.14x = 356,160,117,708,359,834,009,600 - Step 5: Solve for x
x = 356,160,117,708,359,834,009,600/685,256,850,861.14 - Step 6: Final answer
x = 519,746,890,907.82
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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.