Finding the Fourth Proportional to 1,216,315.74, 1,678,782.18 and 707,311.74
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Solution
The fourth proportional to 1,216,315.74, 1,678,782.18 and 707,311.74 is: 976,245.15
Step by Step Solution
- Step 1: Write the proportion equation
1,216,315.74 : 1,678,782.18 = 707,311.74 : x - Step 2: Convert to fraction form
1,216,315.74/1,678,782.18 = 707,311.74/x - Step 3: Cross multiply
1,216,315.74x = 1,678,782.18 × 707,311.74 - Step 4: Simplify right side
1,216,315.74x = 1,187,422,344,816.79 - Step 5: Solve for x
x = 1,187,422,344,816.79/1,216,315.74 - Step 6: Final answer
x = 976,245.15
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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.