Finding the Fourth Proportional to 1,555,099.80, 2,332,649.70 and 1,289,379.30
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Solution
The fourth proportional to 1,555,099.80, 2,332,649.70 and 1,289,379.30 is: 1,934,068.95
Step by Step Solution
- Step 1: Write the proportion equation
1,555,099.80 : 2,332,649.70 = 1,289,379.30 : x - Step 2: Convert to fraction form
1,555,099.80/2,332,649.70 = 1,289,379.30/x - Step 3: Cross multiply
1,555,099.80x = 2,332,649.70 × 1,289,379.30 - Step 4: Simplify right side
1,555,099.80x = 3,007,670,237,331.21 - Step 5: Solve for x
x = 3,007,670,237,331.21/1,555,099.80 - Step 6: Final answer
x = 1,934,068.95
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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.