Finding the Fourth Proportional to 1,216,570.90, 1,678,850.30 and 672,694.70
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Solution
The fourth proportional to 1,216,570.90, 1,678,850.30 and 672,694.70 is: 928,308.99
Step by Step Solution
- Step 1: Write the proportion equation
1,216,570.90 : 1,678,850.30 = 672,694.70 : x - Step 2: Convert to fraction form
1,216,570.90/1,678,850.30 = 672,694.70/x - Step 3: Cross multiply
1,216,570.90x = 1,678,850.30 × 672,694.70 - Step 4: Simplify right side
1,216,570.90x = 1,129,353,698,903.41 - Step 5: Solve for x
x = 1,129,353,698,903.41/1,216,570.90 - Step 6: Final answer
x = 928,308.99
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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.