Finding the Fourth Proportional to 1,678,135.02, 2,515,836.05 and 780,143.10
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Solution
The fourth proportional to 1,678,135.02, 2,515,836.05 and 780,143.10 is: 1,169,579.39
Step by Step Solution
- Step 1: Write the proportion equation
1,678,135.02 : 2,515,836.05 = 780,143.10 : x - Step 2: Convert to fraction form
1,678,135.02/2,515,836.05 = 780,143.10/x - Step 3: Cross multiply
1,678,135.02x = 2,515,836.05 × 780,143.10 - Step 4: Simplify right side
1,678,135.02x = 1,962,712,131,238.04 - Step 5: Solve for x
x = 1,962,712,131,238.04/1,678,135.02 - Step 6: Final answer
x = 1,169,579.39
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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.