Finding the Fourth Proportional to 1,086,086,442.92, 1,498,848,644.94 and 640,068,630.44
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Solution
The fourth proportional to 1,086,086,442.92, 1,498,848,644.94 and 640,068,630.44 is: 883,323,795.87
Step by Step Solution
- Step 1: Write the proportion equation
1,086,086,442.92 : 1,498,848,644.94 = 640,068,630.44 : x - Step 2: Convert to fraction form
1,086,086,442.92/1,498,848,644.94 = 640,068,630.44/x - Step 3: Cross multiply
1,086,086,442.92x = 1,498,848,644.94 × 640,068,630.44 - Step 4: Simplify right side
1,086,086,442.92x = 959,365,999,403,595,776 - Step 5: Solve for x
x = 959,365,999,403,595,776/1,086,086,442.92 - Step 6: Final answer
x = 883,323,795.87
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1.5x scale
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.