Finding the Fourth Proportional to 888,219,852.80, 1,331,538,419.64 and 421,593,396.80
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Solution
The fourth proportional to 888,219,852.80, 1,331,538,419.64 and 421,593,396.80 is: 632,014,476.52
Step by Step Solution
- Step 1: Write the proportion equation
888,219,852.80 : 1,331,538,419.64 = 421,593,396.80 : x - Step 2: Convert to fraction form
888,219,852.80/1,331,538,419.64 = 421,593,396.80/x - Step 3: Cross multiply
888,219,852.80x = 1,331,538,419.64 × 421,593,396.80 - Step 4: Simplify right side
888,219,852.80x = 561,367,805,305,731,520 - Step 5: Solve for x
x = 561,367,805,305,731,520/888,219,852.80 - Step 6: Final answer
x = 632,014,476.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.