Finding the Fourth Proportional to 1,240,920.12, 1,712,656.21 and 757,763.99
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Solution
The fourth proportional to 1,240,920.12, 1,712,656.21 and 757,763.99 is: 1,045,828.15
Step by Step Solution
- Step 1: Write the proportion equation
1,240,920.12 : 1,712,656.21 = 757,763.99 : x - Step 2: Convert to fraction form
1,240,920.12/1,712,656.21 = 757,763.99/x - Step 3: Cross multiply
1,240,920.12x = 1,712,656.21 × 757,763.99 - Step 4: Simplify right side
1,240,920.12x = 1,297,789,194,624.60 - Step 5: Solve for x
x = 1,297,789,194,624.60/1,240,920.12 - Step 6: Final answer
x = 1,045,828.15
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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.