Finding the Fourth Proportional to 1,122,081.80, 1,683,122.70 and 448,267.10
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Solution
The fourth proportional to 1,122,081.80, 1,683,122.70 and 448,267.10 is: 672,400.65
Step by Step Solution
- Step 1: Write the proportion equation
1,122,081.80 : 1,683,122.70 = 448,267.10 : x - Step 2: Convert to fraction form
1,122,081.80/1,683,122.70 = 448,267.10/x - Step 3: Cross multiply
1,122,081.80x = 1,683,122.70 × 448,267.10 - Step 4: Simplify right side
1,122,081.80x = 754,488,531,673.17 - Step 5: Solve for x
x = 754,488,531,673.17/1,122,081.80 - Step 6: Final answer
x = 672,400.65
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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.