Finding the Fourth Proportional to 1,287,756.24, 1,930,451.76 and 445,719.12
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Solution
The fourth proportional to 1,287,756.24, 1,930,451.76 and 445,719.12 is: 668,169.36
Step by Step Solution
- Step 1: Write the proportion equation
1,287,756.24 : 1,930,451.76 = 445,719.12 : x - Step 2: Convert to fraction form
1,287,756.24/1,930,451.76 = 445,719.12/x - Step 3: Cross multiply
1,287,756.24x = 1,930,451.76 × 445,719.12 - Step 4: Simplify right side
1,287,756.24x = 860,439,259,669.65 - Step 5: Solve for x
x = 860,439,259,669.65/1,287,756.24 - Step 6: Final answer
x = 668,169.36
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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.