Finding the Fourth Proportional to 5,202,035.21, 7,178,646.46 and 2,878,787.95
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Solution
The fourth proportional to 5,202,035.21, 7,178,646.46 and 2,878,787.95 is: 3,972,637.64
Step by Step Solution
- Step 1: Write the proportion equation
5,202,035.21 : 7,178,646.46 = 2,878,787.95 : x - Step 2: Convert to fraction form
5,202,035.21/7,178,646.46 = 2,878,787.95/x - Step 3: Cross multiply
5,202,035.21x = 7,178,646.46 × 2,878,787.95 - Step 4: Simplify right side
5,202,035.21x = 20,665,800,876,070.98 - Step 5: Solve for x
x = 20,665,800,876,070.98/5,202,035.21 - Step 6: Final answer
x = 3,972,637.64
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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.