Finding the Fourth Proportional to 8,163,477.09, 11,261,829.20 and 5,263,799.40
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Solution
The fourth proportional to 8,163,477.09, 11,261,829.20 and 5,263,799.40 is: 7,261,612.80
Step by Step Solution
- Step 1: Write the proportion equation
8,163,477.09 : 11,261,829.20 = 5,263,799.40 : x - Step 2: Convert to fraction form
8,163,477.09/11,261,829.20 = 5,263,799.40/x - Step 3: Cross multiply
8,163,477.09x = 11,261,829.20 × 5,263,799.40 - Step 4: Simplify right side
8,163,477.09x = 59,280,009,759,543.49 - Step 5: Solve for x
x = 59,280,009,759,543.49/8,163,477.09 - Step 6: Final answer
x = 7,261,612.80
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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.