Finding the Fourth Proportional to 703,185,166.32, 970,348,227.60 and 389,907,782.68
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Solution
The fourth proportional to 703,185,166.32, 970,348,227.60 and 389,907,782.68 is: 538,046,511.75
Step by Step Solution
- Step 1: Write the proportion equation
703,185,166.32 : 970,348,227.60 = 389,907,782.68 : x - Step 2: Convert to fraction form
703,185,166.32/970,348,227.60 = 389,907,782.68/x - Step 3: Cross multiply
703,185,166.32x = 970,348,227.60 × 389,907,782.68 - Step 4: Simplify right side
703,185,166.32x = 378,346,325,850,984,000 - Step 5: Solve for x
x = 378,346,325,850,984,000/703,185,166.32 - Step 6: Final answer
x = 538,046,511.75
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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.