Finding the Fourth Proportional to 1,220,087.08, 1,830,374.94 and 421,397.80
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Solution
The fourth proportional to 1,220,087.08, 1,830,374.94 and 421,397.80 is: 632,181.08
Step by Step Solution
- Step 1: Write the proportion equation
1,220,087.08 : 1,830,374.94 = 421,397.80 : x - Step 2: Convert to fraction form
1,220,087.08/1,830,374.94 = 421,397.80/x - Step 3: Cross multiply
1,220,087.08x = 1,830,374.94 × 421,397.80 - Step 4: Simplify right side
1,220,087.08x = 771,315,972,891.13 - Step 5: Solve for x
x = 771,315,972,891.13/1,220,087.08 - Step 6: Final answer
x = 632,181.08
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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.