Finding the Fourth Proportional to 1,355,467.85, 2,031,879.85 and 645,305.21
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Solution
The fourth proportional to 1,355,467.85, 2,031,879.85 and 645,305.21 is: 967,328.47
Step by Step Solution
- Step 1: Write the proportion equation
1,355,467.85 : 2,031,879.85 = 645,305.21 : x - Step 2: Convert to fraction form
1,355,467.85/2,031,879.85 = 645,305.21/x - Step 3: Cross multiply
1,355,467.85x = 2,031,879.85 × 645,305.21 - Step 4: Simplify right side
1,355,467.85x = 1,311,182,641,526.36 - Step 5: Solve for x
x = 1,311,182,641,526.36/1,355,467.85 - Step 6: Final answer
x = 967,328.47
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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.