Finding the Fourth Proportional to 1,216,351.12, 1,678,560.34 and 679,807.12
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Solution
The fourth proportional to 1,216,351.12, 1,678,560.34 and 679,807.12 is: 938,131.48
Step by Step Solution
- Step 1: Write the proportion equation
1,216,351.12 : 1,678,560.34 = 679,807.12 : x - Step 2: Convert to fraction form
1,216,351.12/1,678,560.34 = 679,807.12/x - Step 3: Cross multiply
1,216,351.12x = 1,678,560.34 × 679,807.12 - Step 4: Simplify right side
1,216,351.12x = 1,141,097,270,481.62 - Step 5: Solve for x
x = 1,141,097,270,481.62/1,216,351.12 - Step 6: Final answer
x = 938,131.48
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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.